diff --git "a/KNAyT4oBgHgl3EQfsfkS/content/tmp_files/load_file.txt" "b/KNAyT4oBgHgl3EQfsfkS/content/tmp_files/load_file.txt" new file mode 100644--- /dev/null +++ "b/KNAyT4oBgHgl3EQfsfkS/content/tmp_files/load_file.txt" @@ -0,0 +1,1685 @@ +filepath=/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf,len=1684 +page_content='MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Preprint 3 January 2023 Compiled using MNRAS LATEX style file v3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 Time-averaging Polarimetric and Spectral Properties of GRBs Liang Li1,2,3⋆ Soroush Shakeri4,1,5† 1ICRANet, Piazza della Repubblica 10, I-65122 Pescara, Italy 2ICRA and Dipartimento di Fisica, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, I-00185 Roma, Italy 3INAF – Osservatorio Astronomico d’Abruzzo, Via M.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Maggini snc, I-64100, Teramo, Italy 4Department of Physics, Isfahan University of Technology, Isfahan 84156-83111 5ICRANet-Isfahan, Isfahan University of Technology, Isfahan 84156-83111, Iran Accepted XXX.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Received YYY;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' in original form ZZZ ABSTRACT One of the most fundamental and yet open issues in gamma-ray burst (GRB) physics, is the comprehension of the nature of their jet composition.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The investigation of joint polarimetric and spectral properties is essential to probe the jet composition and radiation mechanism of GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Several distinct categories of jet properties—the “Kinetic-energy-dominated" (KED), “Poynting- flux-dominated" (PFD), and “Hybrid-dominated" (HD) jets—have been observed in the observed GRB spectra, and the emission dominated by different jet properties is expected to have a different level of polarization (πKED ≲ πHD ≲ πPED).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the present paper,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' we collected a GRB sample in which all the bursts detected by the Gamma-ray Burst Monitor (GBM) on board the NASA Fermi Gamma-ray Space Telescope whose polarization measurements are also reported in the literature and the epochs of prompt emission are heavily overlapped with their polarization observations,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' aiming to establish a connection between the polarization and jet properties of GRBs,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and to confirm the validity of this correlation (πKED ≲ πHD ≲ πPED) from observations.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With a detailed spectral analysis, we found that all the bursts are classified as the “Hybrid" jet type, implying that one cannot rule out that the photosphere emission may also be the possible mechanism powering the high levels of polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreover, we also discovered that the polarization degrees π are tightly correlated with the cosmological rest-frame peak energy (Ep,z) of the νFν prompt emission spectrum, the isotropic-bolometric-equivalent emission energy (Eγ,iso), and the blackbody temperature (kT).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Finally, we present different polarization models in the presence of ordered and random magnetic field configurations with the properties of corresponding hybrid jets in order to interpret polarization measurements of the prompt emission in our sample.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Key words: gamma-ray burst: general, radiation mechanisms: non-thermal, radiation mechanisms: thermal 1 INTRODUCTION Gamma-ray bursts (GRBs) are one of the most explosive, and elec- tromagnetically the brightest transient phenomena in the Universe, occurrence at cosmological distances.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' After decades of investiga- tion, the origin of the jet composition (a hot baryonic-dominated fireball or a cold Poynting-flux-dominated outflow), and the radi- ation mechanism and energy dissipation mechanism (synchrotron, or Comptonization of quasi-thermal emission from the photosphere) in gamma-ray burst (GRB) physics are still unclear (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Rees & Meszaros 1994;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Mészáros & Rees 2000;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Rees & Mészáros 2005;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Pe’er et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2006;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Dai et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2006;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Pe’er 2015;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Pe’Er & Ryde 2017;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang 2018;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Bégué et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' There are two crucial clues that can in principle be helpful in di- agnosing the jet composition of GRBs, as well as their radiation mechanism and energy dissipation mechanism.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The conventional approach is to examine the spectral properties of prompt emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' ⋆ E-mail: liang.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='li@icranet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='org (LL) † E-mail:s.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='shakeri@iut.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='ac.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='ir (SS) Theoretically, a thermal component originating from photosphere emission, or a non-thermal component originating from synchrotron radiation, possibly also from inverse Compton scattering, is often expected to be present in GRB spectral analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Phenomenologi- cally, GRB spectra in the keV-MeV energy range can be typically well-delineated by an empirical function, known as the Band func- tion (Band et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1993), which is generally considered to be a non- thermal spectrum.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The Band spectrum features a smoothly broken power law, with the peak energy Ep ≃ 210 keV (the energy at which most of the energy is released) in νFν space and the asymptotic power-law photon indices below (α ≃ −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8) and above (β ≃ −2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5) the break energy (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The low-energy spectra dur- ing GRB prompt emission phase are closely related to the energy distribution of electrons (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Preece et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1998;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lloyd & Petrosian 2000;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Geng et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This fact can be utilized in order to diag- nose GRBs radiation mechanism as well as their jet properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For instance, synchrotron emission predicts two different α values: α=- 3/2 and α=-2/3 (so-called the line-of-death (LOD) of synchrotron emission, Preece et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1998) correspond to the fast-cooling and slow-cooling synchrotron emission, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It has been shown © 2023 The Authors arXiv:2301.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='00576v1 [astro-ph.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='HE] 2 Jan 2023 2 Li & Shakeri that the synchrotron emission in the presence of a decaying mag- netic field can reproduce the Band-like spectrum of the GRB prompt phase (Lan et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' While photosphere models, on the other hand, predict much harder values of α;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', above α=-2/3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For ex- ample, a recent study (Acuner et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020) suggests that the spec- tra that prefer the photospheric model all have low-energy power- law indices α ∼>-0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5, as long as the data has a high significance.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Years of observations have revealed, however, that GRBs have di- verse spectral properties, making it difficult for a single spectral model (such as the Band-alone model) to accurately characterize all the spectral shapes.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For instance, time-resolved and time-integrated spectral analysis inferred from the broadband Fermi observations have revealed that GRB prompt emission exhibits remarkably di- verse spectral properties (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Abdo et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Ryde et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2010;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Axelsson et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Acuner et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li 2019a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019, 2021, 2022b;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Deng et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A kinetic-energy-dominated (KED) jet characterised by a quasi-thermal Planck-like spectrum has been detected in some bursts (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRBs 090902B, 220426A, Ryde et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2010;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Deng et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Wang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Song et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022), while a cold Poynting-flux-dominated (PFD) outflow characterised by a Band (or cutoff power-law1)-only function (Band et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1993) has been also observed in some other bursts (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 080916C2, GRB 130606B, and many others, Abdo et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li 2022a), even a hybrid-dominated (HD) relativistic outflow with a hot fireball com- ponent and a cold Poynting-flux component, characterized by either a composited spectral scenario, with a non-thermal component and a thermal component, e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', GRBs 100724B, 110721A, 150314A, 190114C, and several others, Axelsson et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Guiriec et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Wang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li 2022a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022b), or a transition from a fireball to a Poynting-flux-dominated outflow within a single burst (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRBs 140206B, 160625B, and several others, Li 2019a), have also been observed.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' An alternative approach is to investigate their polarization prop- erties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Theoretically, photon polarizations play a key role to un- derstand the jet composition, angular structure, geometric config- uration, magnetic composition and magnetic field configuration of GRB jets, and radiation mechanism of GRB jets (Toma et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lundman et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2013;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang 2014;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Although magnetic field configurations with relatively large coherence lengths more than gyroradius of charged particles can generate the same energy spectrum via synchrotron mechanism, the level of polariza- tion may significantly different for various magnetic field structures.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore joint spectral and polarization analysis is essential to de- termine the magnetic field structure in outflow materials of GRBs (Granot 2003;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lyutikov et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2003;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Granot & Königl 2003a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Kole et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For instance, the center engine is anticipated to gen- erate strong magnetic fields (a highly magnetized jet) and launch them concurrently with the relativistic jets.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It is unclear, neverthe- less, whether the GRB emission is caused by shock dissipation or magnetic reconnection, and whether the outflow is dominated by the photosphere or synchrotron emission (Toma et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In fact, the generation of the polarization signal can be intrinsic to the emission process or due to the propagation effects Shakeri 1 Recent studies (Li 2022b,a) supported by several pieces of additional ev- idence (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', inconsistent spectral parameter distributions and distinct Amati and Yonetoku correlations) have shown that Band-like spectra and CPL-like spectra may originate from distinct radiation processes.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2 It has been demonstrated in recent studies (Guiriec et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2015;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Vereshcha- gin et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022) that a thermal component needs to be added during the initial prompt emission of GRB 080916C to obtain an acceptable fit to the spectral data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' & Allahyari (2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Several emission models (induced synchrotron emission, Rybicki & Lightman 1979;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' photosphere emission, Lund- man et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and Compton drag model, Lazzati et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004) have been proposed to explain the intrinsic polarization properties of relativistic jets during prompt emissions.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (i) Synchrotron emis- sion model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' There are some studies (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Rybicki & Lightman 1979;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Toma et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009b;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lan & Dai 2020) showing that higher values of linear polarized signal (polarization degree π ranging from 20% to 70%) is expected to be measured with an ordered magnetic field from the synchrotron emission from a relativistic jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' While jets with random magnetic fields produce lower levels of polarization, this is due to the polarization being canceled out so that the net polariza- tion degree being close to zero for an on-axis observer.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A polariza- tion detection which is less than 15% is believed to be originated from a random magnetic field configuration within the jet (Mao & Wang 2013).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For example, if the emission is dominated by the inter- nal shock (IS) model, π is expected to range from 10% (the maxed magnetic field configuration) to 70% (the large-scale ordered mag- netic field configuration).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (ii) Dissipative photosphere model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The dissipative photosphere model predicts a relatively low degree of po- larization in the γ-ray band.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, a structured jet photosphere model might also generate polarized photons by Compton scatter- ing, but the degree of polarization would be energy-dependent from the synchrotron model in ordered magnetic fields.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For instance, it is demonstrated that if the jet has considerable structure, the model may create polarizations of up to 40% within δΘ ∼ Γ−1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, in the absence of dissipation and below the photosphere the polariza- tion is rather limited to values below 15%-20% (Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' To restrict these models, a high-sensitivity gamma-ray polarimeter with a broad band-pass to detect energy-dependent polarization signals is required (Zhang 2014;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Ito et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lundman et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lund- man et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (iii) Internal-collision-induced magnetic recon- nection and turbulence (ICMART) model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the ICMART model (Zhang & Yan 2011a), π is expected to range from 60 percent at the beginning of the pulse and down to about 10 percent at the end of the pulse.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A decaying polarization degree is predicted.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It is highly speculated that the prompt emission is likely expected to be strongly polarized owing to its non-thermal origin (a non- thermal Band-like spectrum).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Observationally, higher levels of lin- ear polarization measured from prompt γ-ray emission have been reported by several authors (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Coburn & Boggs 2003;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Willis et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2005;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' McGlynn et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2007;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For in- stance, a higher polarization degree π = 80%±20% in GRB 021006 was claimed by Coburn & Boggs (2003) using the RHESSI data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Later, several other cases were also reported, e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', GRB 930131 (π > 35%), GRB 960924 (π > 50%), GRB 041219A, GRB 100826A (π = 27% ± 11%), GRB 110301A (π = 70% ± 22%), and GRB 110721A (π = 84%+16% −28%).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Subsequent observations were also ob- served in the optical band during the afterglow emission and were of relatively low polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Compared with prompt γ-ray emission, the levels of linear polarization measured from afterglow emission are relatively lower.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', GRB 060418 (π < 8%), GRB 090102 (π = 10.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1% ± 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3%), GRB 091208B (π = 10.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4% ± 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5%), and 120328A (π = 28% ± 4%).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, higher degrees of polarization observa- tions are still expected to be measured from early reverse shocks, up to ∼ 60%.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Generally speaking, we can study GRB polarization and spec- tral properties either in a time-integrated (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li 2022a) or time- resolved (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021) manner.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The former represents average polarimetric and spectral properties and is treated as a single-time event for the entire emission period.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The latter treats the entire emis- sion period as divided into multiple-time events, and polarimetric MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 3 and spectral analyses are therefore performed on each event individ- ually.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The time-integrated method depends more heavily on the sta- tistical results of a large sample in order to produce a more trustwor- thy result because different bursts have distinct observational prop- erties (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', angular structure).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, this issue does not arise when a time-resolved technique is used in the same burst since it ensures that other conditions (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', magnetic field configuration) are essentially the same and, therefore, makes it easier to obtain reliable results.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Following these lines of argument, the emissions dominated by different jet properties (KED, PFD, and HD) may have different lev- els of prompt-GRB polarization measurements3 (Li 2019a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As a result, a different level of polarization degrees (πKED ≲ πHD ≲ πPED) is naturally expected due to different jet properties if other condi- tions are basically the same, where πKED, πHD, and πPED are the po- larization degree in the KED, HD, and PHD jets, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This may provide a method to study the correlations between polarization properties and their spectral properties, as well as their jet properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A possible connection between the spectral and polarization proper- ties has not yet been firmly established, though recent works provide some statistical results (Chattopadhyay et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Kole et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore, we dedicate this work to examining whether any possi- ble connections exist between polarization and jet properties, and aim to confirm the validity of this correlation (πKED ≲ πHD ≲ πPED) from observations.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Practically, several important factors need to be taken into account in our analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (i) In order to potentially evaluate all of the frequently-used GRB spectral models and thus diagnose the jet properties, our analysis focuses on the bursts detected by the Gamma-ray Burst Monitor (GBM, 8 KeV-40 MeV, Meegan et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009) onboard the NASA Fermi Gamma-ray Space Telescope.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (ii) To directly compare the spectral and polarization properties and thus make our results more trustworthy, we select the bursts during which polarization observations and spectral data are available during the same epoch.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (iii) Realistically, systematic error is frequently at play in polarization measurements and different polarization instruments have different systematic errors.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore, a high-significance sig- nal from polarization measurement is required.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In this paper, we collect a sample of the Fermi-GBM detected bursts along with the polarized measurements reported in the literature using the time- integrated spectral and polarization analysis approach based on their statistical results, aiming to establish a connection between the po- larization and jet properties of GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The paper is organized as follows.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The sample and Methodol- ogy are presented in Section 2 and Section 3, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our re- sults and their physical implication are summarized in Section 4 and Section 5, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The conclusion is presented in Section 5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Throughout the paper, the standard Λ-CDM cosmology with the pa- rameters H0 = 67.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 kms−1 Mpc−1, ΩM = 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='315, and ΩΛ = 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='685 are adopted (Planck Collaboration et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 3 Polarization measurement is a measurement where π ranges from 0% to 100% (0% ≤ π ≤ 100%) and includes the non-detection (0%), so measur- ing something consistent with zero is a measurement.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Polarization detection, however, indicates a different meaning, where 0% < π ≤ 100% and excludes 0%, since we have excluded part of the parameter space equivalent to detec- tion measurements due to the fact that a non-detection of flux implies that we did not measure something.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2 THE SAMPLE A comprehensive database of GRB polarimetric observations has been created in a recent work (Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022a) by extensively search- ing for those GRBs in the literature whose polarization measure- ments have been reported.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A total of 73 bursts with polarization detections were included in the database, covering a broad wave- length range from radio to optical, X-ray, and γ-ray emission (see Table 1 in Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The prompt emission data of these bursts were observed by different satellites (Fermi, Swift, BeppoSAX, and BATSE).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On the other hand, the diagnosis of jet composition usually requires a refined spectral analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Among these satellites, Fermi covers the broadest energy range in the observation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Consequently, in order to fully evaluate all current spectral models we pay spe- cial attention to these Fermi-detected bursts.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The Gamma-ray Burst Monitor (GBM, 8 KeV-40 MeV, Meegan et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009) and the Large Area Telescope (LAT, 20 MeV- 300 GeV, Atwood et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009), on- board the NASA Fermi Gamma-ray Space Telescope, together pro- vide unprecedented spectral coverage for seven orders of magnitude in energy (from ∼8 keV to ∼300 GeV).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our statistical analysis in the current work includes the prompt γ-ray emission spectral anal- ysis and the connection between the spectrum and polarization are thus based on the Fermi-detected bursts.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On the other hand, we fo- cus on the GRBs whose polarization measurements were recorded during the prompt emission in the γ-ray band in order to compare the polarization and spectral properties during the same time period.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Following are the specific observational properties of the five fas- cinating bursts (see Table 1) that made up the smaller sample as a result of these selection criteria.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 100826A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On August 26, 2010 at 22:58:22.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='898 (T0) UT, GRB 100826A, was detected by the Fermi/GBM.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A t90 of (84.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='993±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='724) s in the 10-1000 keV was measured using the GBM data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The GBM lightcurve exhibits a complicated shape with multiple-peak pulses, and the fluence (flux integrated over the burst duration) in the energy range of 10-1000 keV during the t90 dura- tion reported by the GBM team is (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6388±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='001)×10−4 erg cm−2 (Figure 2).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This burst has no redshift measurement, a value of 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3 is estimated using the Yonetoku correlation (Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore, the isotropic-equivalent energy released from gamma- ray emission in the cosmological frame for this burst can be cal- culated as, Eγ,iso=(3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='39+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='36 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='33)×1054 erg.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The KED-to-PFD transition pattern belonging to the “HD” jet type is diagnosed for this burst by using a low-energy spectrum based on a detailed time-resolved spectral analysis during prompt emission (see Section 4).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2011a) reported that a relatively higher polarization degree (πobs=27±11) with a 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='9σ linear polarization signal significance was detected during the prompt emission (0-100 seconds after the trig- ger) of GRB 100826A using a GAmma-ray Polarimeter (GAP) on board a small Japanese solar-power-sail demonstrator, Interplanetary Kite-craft Accelerated by Radiation of the Sun (IKAROS).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 110301A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On March 01, 2011 at 05:08:43.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='070 (T0) UT, GRB 110301A, was detected by the Fermi-GBM.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A t90 of (5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='693± 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='362) s in the 10-1000 keV was measured using the GBM data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The lightcurve exhibits a complicated shape with multiple-peak pulses, and the fluence in the energy range of 10-1000 keV from T0+0 s to T0+5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='693 s reported by the GBM team is (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5891±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='003)×10−5 erg cm−2 (Figure 3).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This burst has no redshift measurement, a value of 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='36 is estimated by using the Yonetoku relation (Yone- toku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With this estimated value of redshift, the isotropic- equivalent energy released from gamma-ray emission in the cosmo- logical frame for this burst can be calculated as, Eγ,iso=1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4×1052 erg.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A KED-to-PFD jet is diagnosed for this burst by using a low-energy MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 4 Li & Shakeri spectrum based on a detailed time-resolved spectral analysis during prompt emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A linear polarization signal (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7σ) with a very high polarization degree (π=70±22) for this burst was claimed by Yone- toku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2012b) using the IKAROS/GAP data 0-7 seconds after the trigger (Figure 3).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 110721A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On July 21, 2011 at 04:47:43.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='761 (T0) UT, GRB 110721A, was detected by the Fermi-GBM.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A t90 of (21.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='822±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='572) s in the 10-1000 keV was measured using the GBM data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The lightcurve exhibits a single-peak pulse, and the fluence in the energy range of 10-1000 keV from T0+0 s to T0+21.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='822 s as re- ported by the GBM team is (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5891±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='003)×10−5 erg cm−2 (Figure 4).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This burst has a value of 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='382 of redshift.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With this redshift, we calculate the isotropic-equivalent energy released from gamma-ray emission in the cosmological frame for this burst, Eγ,iso=3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0×1052 erg.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A peak-KED jet is diagnosed for this burst by using a low- energy spectrum based on a detailed time-resolved spectral analysis during prompt emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A linear polarization signal (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3σ) with a very high polarization degree (π=85+16 −22) for this burst was claimed by Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2012b) using the IKAROS/GAP data 0-11 sec- onds after the trigger (Figure 4).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 140206A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On 6 February 2014 at 06:36:12.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='843 UT (T0), a long burst, GRB 140206B, was detected by Fermi-GBM and sev- eral other satellites (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', INTEGRAL/IBIS).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Its GBM lightcurve in the 10-900 keV exhibits three clearly separated emission episodes (G1, G2, and G3) as shown in the left panel of Figure 5, with T90 of 146.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='690±4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='419 s was measured by GBM data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 140206B is a very bright burst, and the fluence (flux integrated over the burst dura- tion) in the energy range of 10-1000 keV from T0+0 s to T0+146.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='690 s reported by the GBM team is (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='23±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='003)×10−4 erg cm−2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This burst has a value of 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73 for redshift.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With this redshift, we calculate the isotropic-equivalent energy released from gamma-ray emission in the cosmological frame for this burst, Eγ,iso=2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3×1054 erg.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The spectral analysis has been performed in great detail in Li (2019a), and three different spectral components (KED-to-PFD) have been identified, a short-thermalized precursor early on, followed up with the main burst with a non-thermal emission later on, and in the last with a fainter burst with still a non-thermal emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Interestingly, immediately following up with the short-thermalized precursor, a clear polarization signal with 90% confidence was observed 4-26 seconds after the trigger as reported in Götz et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014) using the INTEGRAL/IBIS data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This signal is a linear polarization with an up-limit polarization degree of π > 28 observed in the γ-ray energy band (Figure 5).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 160802A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 160802A was detected by GBM on Au- gust 2, 2016 at UT 06:13:29.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='63.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A T90 of (16.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='384±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='362) s in the 10-1000 keV was measured using the GBM data.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The prompt emis- sion light curve shows two clearly separated active periods, with a quiescent time interval between the two periods of about 10 sec- onds.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The earlier period consists of overlapping pulses while the lat- ter period shows a clear single-peak pulse.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The fluence in the energy range of 10-1000 keV from T0+0 s to T0+21.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='822 s as reported by the GBM team is (6.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8399±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0057)×10−5 erg cm−2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This burst has no redshift measurement, a value of 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='36 is estimated by using the Yonetoku relation (Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using this estimated value of redshift, we further calculate the isotropic-equivalent energy re- leased from gamma-ray emission in the cosmological frame for this burst, Eγ,iso=2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2×1053 erg.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A peak-KED jet for each period is di- agnosed for this burst by using a low-energy spectrum based on a detailed time-resolved spectral analysis during prompt emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A linear polarization signal (∼3σ) with a very high polarization degree (π=85±29) for this burst was claimed by Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2012b) us- ing the AstroSat/GZTI data 0-20.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='34 seconds after the trigger (Figure 6).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 3 METHODOLOGY 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1 Spectral Analysis Techniques In order to diagnose the jet properties for a given burst, a de- tailed time-integrated or time-resolved spectral analysis is re- quired.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The spectral analysis is performed by a pure Python pack- age, namely, the Multi-Mission Maximum Likelihood Framework (3ML,Vianello et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2015).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreover, a Bayesian approach and Markov Chain Monte Carlo (MCMC) iterations to explore the best parameter space was used.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our spectral analy- sis includes the following main steps.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (1).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' First is to select detec- tors, sources, and background intervals;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Second, we used the Bayesian block method (BBlocks, Scargle et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2013) to bin the Time-Tagged Events (TTE) lightcurve of the brightest detector (with the minimum viewing angle), and the significance (S, Vianello 2018) for each BBlocks time bin was also calculated.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (3).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Third, we use a typical GRB spectral model (Band function, Band et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1993) to fit all the spectra selected by the BBlocks method and the best model parameters are obtained by adopting a fully Bayesian approach.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For a detailed Bayesian spectral analysis and the reduction procedure applied to a GRB spectrum, we refer to Li (2019a,b, 2020);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2021);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li & Zhang (2021).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 Using the Yonetoku correlation to infer their redshift values In order to study the intrinsic properties in the cosmological rest frame, a redshift measurement for each burst is needed.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Unfortu- nately, we currently have 3 bursts (GRB 100826A, GRB 110301A, and GRB 160802A) without known redshift.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Several works to in- fer redshifts using empirical relations of GRB have been reported in the literature(Amati et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2002;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For example, (Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004) discovered a new and much tighter relation- ship between the spectral peak energy (Ep) and the peak luminos- ity (Lp) using the combined data detected by the BeppoSAX and BATSE satellites, and claimed that one can use the Ep-Lp relation to estimating redshift without knowing distances in the BSTASE cata- log.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We, therefore, attempt applying the Yonetoku relation(Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004) to estimate redshift values for these bursts.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our procedure to estimate the pseudo-redshift using the Yonetoku relation includes the following steps.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' First, we perform a spectral fit to the peak spectrum (the brightest time bin was selected by using the Bayesian blocks method(Scargle et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2013) at the highest statistical significance S) of each burst.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The peak flux Fγ and peak energy Ep on the observer’s frame from the spectral fits are thus obtained, where Fγ is the observed peak flux integrated between (1-104) keV in units or erg cm−2 s−1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Second, in order to use the Ep,z-Lp,iso relation, a bolometric lu- minosity in a common cosmological rest-frame energy band (1-104 keV) is needed.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It can be obtained by using the spectral parameters to conduct a k-correction extrapolating the observed energy band to 1- 104 keV.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For a given burst, the k-correction factor (kc) can be derived using the following procedure.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The observed flux Fobs (erg cm−2 s−1), in a fixed detector energy bandwidth [e1, e2] (for instance, for the Fermi-GBM observation, e1=8 keV, e2=40 MeV), can be written as: Fobs [e1,e2] = � e2 e1 EN(E)dE, (1) MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 5 where E is in units of keV, and N(E) is a GRB photon number spec- trum.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The total luminosity emitted in the bandwidth [e1,e2], defined in the cosmological rest-frame, is given by: L[e1(1+z),e2(1+z)] = 4ˆπD2 L(z)Fobs [e1,e2], (2) which DL(z) is the luminosity distance.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' To express the luminosity L in the cosmological rest-frame energy band, [E1=1 keV, E2 =104 keV], common to all sources, the Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2) can be rewritten as: L[E1,E2] = 4ˆπD2 LFobs � E1 1+z , E2 1+z � = 4πD2 Lk[e1,e2,E1,E2,z]Fobs [e1,e2], (3) where the k-correction factor, kc, is therefore defined as: kc = k[e1,e2,E1,E2,z] = Fobs � E1 1+z ;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' E2 1+z � Fobs [e1,e2] = � E2/(1+z) E1/(1+z) EN(E)dE � e2 e1 EN(E)dE , (4) Last, with the k-correction factors known, the peak luminosity can be derived from the observed γ-ray flux Fγ according to L = 4ˆπd2 LFγkc, where dL is the luminosity distance.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Finally, as long as the prompt emission spectral properties can be obtained, the Yonetoku relation can be used to infer redshift.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With the above Steps, one can use Equation (2) in Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2004) to estimate their redshift values, Lp 1052ergs−1 = (2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='34+2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='29 −1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='76)×105 �Ep(1+z) 1keV �2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 .' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (5) Table 2 lists the spectral properties obtained from the peak spec- tral analysis and the estimated redshift values inferred from the Yo- netoku relation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 4 RESULTS 4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1 Spectral Properties and their inferred jet properties Five bursts were claimed to have a high-significance polarization detection (Table 1) and GBM data (Table 4) taken at their prompt emission, thereby providing an “ideal” sample to study the possi- ble connection between jet properties and polarization straightfor- wardly.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In practice, either time-integrated or time-resolved spectral analy- sis is frequently used to diagnose their jet properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Several meth- ods have been widely used to diagnose the jet properties based on their spectral analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The simplest method is to use the low-energy spectrum (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Preece et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 1998) to resolve the jet properties for a given pulse/burst (Method-I).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In this method, a single empirical model (such as the Band model) based on a time-resolved tech- nique is typically used.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The KED jets, therefore, can be defined as all α indices, within uncertainties, in a given burst, obtained from time-resolved spectral analysis, are systematically above the synchrotron limit throughout the entire burst/pulse duration, being consistent with a matter-dominated fireball jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The PFD jets, on the other hand, are consistent with the scenario that all α indices, within uncertainties, in a given burst are below the synchrotron limit throughout the burst/pulse duration, this suggests a Poynting-flux- dominated jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The HD jets represent the moderate scenario, and can be presented that some α indices, obtained from time-resolved spectral analysis, are above the synchrotron limit (α >2/3) while some others are below the synchrotron limit (α <2/3) throughout the burst/pulse duration.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The HD jets can be further divided into two subcategories.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (1) the peak-KED pattern since the thermal emission component (the spectra that violate the LOD line) is only detected around the peak of the pulse (thermal component dominates the peak of a pulse/burst);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and (2) the KED-to-PFD (thermal to non-thermal component) transition pattern (Li 2019a), since the thermal emission component is detected at the beginning of the burst, and followed by non-thermal emission component.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, it may be difficult to classify jets as either KED or PFD jets based on the spectral index alone.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In contrast to an optically-thin synchrotron emission, a photo- spheric quasi-thermal component would, in fact, have a harder low- energy spectral index, but this does not guarantee that the jet is KED (Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore, a more reliable approach is to find the best model (Method-II) by comparing various frequently-used spec- tral models using certain statistical information criteria, such as the Akaike Information Criteria (AIC;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Akaike 1974), Bayesian Infor- mation Criteria (BIC;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Schwarz 1978), and the Deviance Information Criterion (DIC;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Spiegelhalter et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2002;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreno et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2013).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Af- ter the identification of the best spectral model, one can assess the jet properties using the spectral properties inferred from the best model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreover, we may also directly fit the spectral data with a physical model (such as the synchrotron emission model, Burgess et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Method-III), so as to diagnose the jet properties and any potential connection with their polarization properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our analysis in this task incorporates both Method-I and Method-II (primary method).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Method III will be used elsewhere.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We first perform time-integrated spectral analysis (treating the entire epoch of polarization observation as one time bin) by using various GRB spectral models, including power-law (PL), blackbody (BB), cutoff power law (CPL), Band function, PL+BB, CPL+BB, and Band+BB, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We adopted both AIC and BIC to eval- uate different spectral models and select the preferred one, and the preferred model is the one that provides the lowest AIC and BIC scores.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As such, we define PFD jets: a single non-thermal (Band-like) spectral compo- nent was found in the time-integrated spectral analysis, like GRB 080916C (Abdo et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' KED jets: a dominate thermal (BB-like) spectral compo- nent was found in the time-integrated spectral analysis, like GRB 090902B (Ryde et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2010) and GRB 220426A (Deng et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' HD jets: a hybrid spectrum of thermal (BB-like) and non- thermal (Band-like) components was observed in the time-integrated spectral analysis in a single burst, like GRB 110721A (Axelsson et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012), and GRB 140206A (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li 2019a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our refined time-integrated spectral analysis suggests that the Band+BB model can best characterize the spectral shape of all the five bursts (see Table 3).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The global properties of our sample used in the spectral analysis are reported in Table 4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' These include the GRB name (column 1), observed duration T90 of burst4 (column 2), 10- 1000 KeV fluence (column 3), together with the used detectors (col- umn 4), the selected source (column 5) and background (column 6) intervals, and the best model (column 7).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The best-fit spectral param- eters of the sample with the Band+BB model are reported in Table 5, including GRB name (column 1), source duration (column 2), and corresponding significance (column 3), and Band component nor- malization K (column 4), low-energy power-law index α (column 5), peak energy Ep (column 6) of the νFν spectrum, and high-energy power-law index β (column 7);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and BB component normalization K (column 8), and temperature kT (column 9).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We next perform time-resolved spectral analysis (treating the entire epoch of polarization observation as divided into multiple- 4 The time interval during which 90% of the total observed counts have been detected.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 6 Li & Shakeri time events) for each individual BBlocks time bin using the Band model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Temporal evolution of α is presented in Figures 2-6 for GRB 110826A, GRB 110301A, GRB110721A, GRB 140206A, and GRB 160802A, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' With the BBlock time bins selected and the corresponding significance (S) values calculated, the data points are shown in different S ranges5: S < 10, 10 ≤ S ≤ 20, and S > 20.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For a subset of GRBs, a mixture of thermal (blackbody contribution from the photosphere emission) and non-thermal (synchrotron emis- sion from relativistic electrons) components was observed in a sin- gle burst (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li 2019a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Previous studies (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Burgess et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014) showed that the characteristic energy (Ep) of non-thermal emission is correlated to the characteristic energy (kT) of thermal emission with a power-law relation in form of Ep ∝ T q, where q ranges from ∼1-2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Burgess et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014) studied a set of bright Fermi single-pulse GRBs and claimed that one can use this correlation to identify whether the jet is dominated by kinetic (q ∼ 1) or magnetic energy (q ∼ 2) de- pending on the value of the exponent.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 110721A was identified as the baryonic jet type in Burgess et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014) with q = 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='24±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='11, which is also consistent with our finding in the current analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our time-integrated spectral analysis indicates that all five bursts belong to the HD jet type.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This finding is quite interesting since only a subset of GRBs (a fairly low percentage) have an observed ther- mal component in their spectral analysis, as suggested by several statistical studies (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Li 2022a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Recently, (Li 2022a) has made a great effort to collect a complete GRB sample in which all bursts were detected by Fermi/GBM with known redshift, and created a spectral parameter catalog based on their model-wise properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' He discovered that ∼ 5% (7/153) of the analyzed bursts were found to require a subdominant thermal component in their time-integrated spectral analysis, including GRB 110721A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our results imply that high-degree polarization measurements may also be associated with a thermal component originating from photosphere emission.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our time-resolved spectral analysis, on the other hand, further suggests that two bursts exhibit the peak-KED pattern (GRB 110721A and GRB 160802A) while the other three bursts (GRB 110301A, GRB 140206A, and GRB 160625B) display the KED-to-PFD transition pattern across the entire burst durations since all α indices are above the synchrotron limit early on (α >2/3), and then drop be- low the synchrotron limit later on (α <2/3), indicating a thermal- to-nonthermal transition signature.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Interestingly,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' after carrying out a detailed time-resolved spectral analysis for a sample of the multi- pulsed bursts,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li (2019a) reported that the jet properties for a good fraction of the multi-pulsed bursts exhibit a transition from thermal to non-thermal component among pulses within a single burst,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and claimed that such “transition" jet properties are clearly observed in four bursts (GRB 140206B,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 140329B,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' GRB 150330A,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and GRB 160625B),' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and the polarization properties in those transition bursts would also differ.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 The Observed Parameter Correlations: Polarization Degrees versus Other Relevant Quantities The most interesting result that draws our attention is that all five bursts in our target sample have a relatively high-degree polarization measurement and are associated with the “HD” jet properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the following discussion, we, therefore, pay special attention to this interesting observation and its theoretical interpretation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 5 Note that the results obtained for those lower-S spectra may not be robust, since the spectral fits would not be well determined due to lack of enough photons.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Much evidence points towards the fact that correlation analysis plays a crucial role in the understanding of GRB physics as it pro- vides a crucial clue to revealing its nature (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Amati et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2002;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Liang & Zhang 2005;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Dainotti et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2008;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Xu & Huang 2012;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Liang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2015;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Dain- otti & Amati 2018;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li 2022a, and references therein).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Here, an attempt has been made to explore the correlations between the po- larization properties and several typical GRB observed quantities.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For instance, the polarization degrees π correlated with (i) the cos- mological rest-frame peak energy (Ep,z) of the νFν prompt emission spectrum, (ii) the isotropic-bolometric-equivalent emission energy Eγ,iso, (iii) the magnetization parameter σ0, (iv) the blackbody tem- perature kT, (v) the redshift z, and (vi) the corresponding energy fluence Sγ.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using the same observed epoch during the prompt emis- sion phase, our target sample allows for a reasonable comparison.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our analysis includes the following steps.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (1) For a given burst in our target sample, we first select the same time interval for the prompt emission data as for the polarization measurement.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2) We then at- tempt to perform a spectral fit to the selected prompt emission data using PL, BB, CPL, Band, PL+BB, CPL+BB, and Band+BB func- tions, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The Band+BB model has an AIC/BIC-statistic improvement of at least 10 with respect to the Band-alone and other models for these bursts, which suggests Band+BB as the preferred model that would fit the data and a thermal component existing in the spectrum.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Since the thermal flux ratio (FBB/Ftot) for these bursts is less than 50% (see Table 5), the thermal components thus are sub- dominant.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Interestingly, Chattopadhyay et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2019) analyzed the prompt emission and polarization data of 11 bright bursts detected during the first year of operation of CZTI, and reported that of these bursts, four bursts (GRB 160106A, GRB 160509A, GRB 160802A, and GRB 160910A) in their spectral analysis showed a deviation from the Band model and an additional thermal blackbody is needed in order to model their spectrum more precisely.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (3) With the spec- tral analysis done in Step (2), we are able to obtain the spectral peak energy (Ep,z) and the blackbody temperature (kT).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Eγ,iso can also be calculated in the cosmological frame with a redshift known (GRB 110721A and GRB 140206B), and with a k-correction applied by integrating the observed energy spectrum over 1 KeV/(1+z) to 10 MeV/(1+z).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We note here that for the remaining three bursts (GRB 100826A, GRB 110301A, and GRB 160802A) with an unknown redshift, we use the Yonetoku relation (Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004) to es- timate their redshift values (see Section 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using these hybrid- spectrum observed properties and following the method described in Gao & Zhang (2015) and Li (2020), we also calculate the mag- netization parameter σ0 for these bursts.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Finally, with these Steps completed, we therefore present π-Ep,z (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7a), π-Eγ,iso (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7b), π-kTz (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7c), π-σ0 (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7d), π-z (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7e), and π-Sγ (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7f) plots in Figure 7.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Interestingly, these scatter plots all seem to exhibit a monotonic power-law decay in their log-log space (except for the π-σ0 correlation), with a similar decay slope ranging from -0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='40 to 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='20.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our results indicate that a higher Ep,z, Eγ,iso, and kTz tend to have a lower-degree polarization π.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, we should note that the sample size is too small to be reliable enough to support the de- rived conclusion, so the results may not be statistically significant.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 5 PHYSICAL IMPLICATION There are several parameters to impact on the degree of polariza- tion in GRBs including the geometry of the jet, its angular struc- ture, the bulk Lorentz factor of outflow material, the magnetic field configuration and observer’s point of view.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Here, we consider an MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 7 ultra-relativistic axi-symmetric jet which lunched by a central en- gine weather a black hole or an rapidly rotating magnetar (e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='g.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Usov 1992;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Thompson 1994;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Dai & Lu 1998;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Wheeler et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2000;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang & Mészáros 2001;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Liu et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2007;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Metzger et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2008;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lei et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2009;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Metzger et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Bucciantini et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lü & Zhang 2014;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Li et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' During the prompt emission, we have ultra- relativistic jet with bulk lorentz factor Γ ≫ 1 leading to strong beam- ing effect of GRB outflow materials where the Doppler factor can be approximated as δD ≈ 2Γ 1+(Γ ˜θ)2 , (6) Due to the relativistic beaming effect of GRB jets, the measured ra- diation energy of the bursts is smaller than its isotropic energy as Eγ = fbEγ,iso by a factor fb = ∆Ω/4π = (1 − cosθ j) ≈ θ2 j/2 where θ j is the half opening angle of the ejecta.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In principle, different GRBs can be viewed from different observing angles θobs with re- spect to the jet’s central axis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Only those observers whose line-of- sight (LOS) intersects the surface of the jet can detect the GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the ultra-relativistic regime, the observed emission mainly receives from a region that is limited to a cone with angular size ˜θ ≲ 1/Γ around LOS.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' At the early time prompt emission when the LOS in- tersects the jet surface, if θobs/θ j ≲ 1−(Γθ j)−1 and Γθ j ≳ O(10), the jet’s edge remains invisible to the observer Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In this case, the emission region can be approximated as an ex- panding thin spherical shell of width ∆ ≪ R/Γ2 (in the lab frame) in which particles cool relatively fast compared to the dynamical time scale of the system.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As the GRB jet has slowed down signifi- cantly when the opening angle θ j ≃ Γ−1 then the jet break happens and the edge effects become important.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The flux density measured by a distant observer from each fluid element in an infinite thin-shell approximation for the prompt emission is given by (Granot 2005) Fν(t) = (1+z) 16π2d2 L(z) � δ3 DL′ ν′(r)d ˜Ω, (7) where dL(z) is the luminosity distance of the source, and d ˜Ω = d ˜φd(cos ˜θ) is the solid angle with ˜θ and ˜φ as the polar angle and the azimuthal angle measured from the LOS, respectively.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The co- moving spectral luminosity L′ ν′(r) for the synchrotron emission is L′ ν′(r) = L′ ν′(R) � 1−(ˆn′ · ˆB′)2� 1+α 2 , (8) where α = −dlog(Fν)/dlog(ν) is the spectral index, ˆn is the ob- server’s LOS in the comoving frame of the GRB jet and ˆB is the local direction of the magnetic field.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The spectral luminosity L′ ν′(R) in the comoving frame of the fluid in terms of frequency ν′ and the peak frequency ν′ p at which the most of the power is emitted is given by L′ ν′(R) = L′ ν′p � ν′ ν′p �−α , (9) here we consider a constant luminosity with a radius which the peak value L′ ν′p.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We assume to have synchrotron emission from accelerat- ing electrons in the magnetig ���eld with isotropic velocity distribu- tion and the energy distribution as a power law ne ∝ γ−p.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In our scenario, we assume that each pulse originates from a sin- gle thin shell and Γ can in principle change for different pulses.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The state of polarization of a radiation field can be expressed in terms of the Stokes parameters I (intensity), Q and U (linear polarizations), V (circular polarization).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In spite of linear polization, only a few mech- anisms can generate the high value of circular polarization in the usual scattering processes in GRBs, and the measured circular polar- ization has only been reported once in a GRB afterglow Wiersema et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore we will not consider circular polarization in this paper.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Stokes parameters Q and U are differences in flux for two orthogonal directions on the sky which are coordinate dependent quantities (Rybicki & Lightman 2008;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Westfold 1959), we define the local degree of linear polarization Π = � Q2 +U2/I where U I = Πsin2θp , Q I = Πcos2θp , θp = 1 2 arctan �U Q � , (10) and θp is the polarization position angle (PA).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The direction of the polarization vector in the synchrotron emission is orthogonal to the LOS of the observer ˆn and the local direction of the magnetic field ˆB in the jet, ˆΠ = (ˆn× ˆB) |ˆn× ˆB)| , (11) The polarization measurements can help in order to probe the magnetic field structure inside the shock wave.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreover, the de- gree of the polarization depends on the GRB jet’s angular structure and the observer’s viewing angle from jet symmetry axis (Lazzati et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The magnetic field structure in KED and PFD flows has a different origin and can be classified into three categories (Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021): (i) a locally ordered magnetic field (Bord) with angular coherent length θ j > θB ≳ 1/Γ, (ii) a toroidal magnetic field (Btrod) which has an ordered axisymmetric configura- tion in the transverse direction with respect to the jet (iii) a tangent magnetic field which could be in principle parallel (B∥) or perpen- dicular (B⊥) to the local fluid velocity.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the PFD the magnetic field is dynamically dominated and usually has a large coherence length such as Btrod which can be produced by a rotating central engine or in a high magnetized flow, other locally and globally ordered field configuration are also possible in this case.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' On the other hand in KED we may have a tangled magnetic field structure with B⊥ or/and B∥ components, however generating such an anisotropic field con- figurations in shock waves seems to be challenging (Gill & Granot 2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A globally ordered magnetic field may naturally be advected from near the central source, while the random magnetic fields gen- erated in the shock dissipation region (Kumar & Zhang 2015;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Geng et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Fan et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2008).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The magnetic field structures that are generated at relativistic collision-less shocks, due to the two-stream instabilities, are expected to be tangled within the shock plane (Medvedev & Loeb 1999).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The degree of linear polarization generated in the synchrotron emission from an isotropic electron distribution with power-law en- ergy spectrum, and for a given direction of magnetic field is given by (Rybicki & Lightman 2008;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Westfold 1959) Πlin max = α+1 α+5/3 = peff +1 peff +7/3, (12) where peff = 2α + 1 is the effective power-law index of the electron distribution.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' peff = � � � 2, νc < ν < νm, slow cooling p, νm < ν < νc, fast cooling p+1, ν > max(νc,νm), either fast or slow cooling (13) and, therefore Πlin max = � � � � � 9/13, νc < ν < νm, fast cooling (p+1) (p+7/3), νm < ν < νc, slow cooling (p+2) (p+10/3), ν > max(νc,νm),either fast or slow cooling (14) MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 8 Li & Shakeri This polarization may originate from a very small region (point- like emitter) in which the magnetic field has a specific orientation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Only in the case of ordered magnetic field with the coherence length comparable or larger than the visible surface of the emitting region, the highest value of the polarization Πlin max in Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19) can be gen- erated.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The photon index in the Synchrotron radiation is limited to −1/3 ⩽ α ≲ 3/2 which regarding Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19) leads to the maximum degree of polarization 50% ≲ Π ≲ 75%.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the left panel of Fig- ure (8), we see predicted polarization values using this theoretical model with observed data using our target sample.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Here α indices are obtained using the spectral analysis defined in §4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We find that the observed data are well distributed along the line predicted by this model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In general, the measured polarization is obtained by integrating the local stokes parameters over the flux of the GRB jet as Π(tf ) = ¯ Q(tf ) I(t f ) = � dFν cos2θp � dFν , (15) assuming to have an axisymmetric flow and taking into account sym- metry consideration, we see that ¯U = 0 and consequently the instan- taneous total degree of the linear polarization is ¯Π = | ¯Q|/I.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We per- form an integration over the equal time surface (EATS) for a single pulse � ¯ Q(t)dt/ � I(t)dt in order to obtain pulse integrated polariza- tion of the prompt emission which leads to Πord Πmax = � ymax 0 dy(1+y)−2−α � dφΛ(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='φ)cos2θp � ymax 0 dy(1+y)−2−α � dφΛ(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='φ) ,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (16) The above formula is valid for the prompt emission from an ultra- relativistic thin-shell for an on-axis observer (θobs = 0) where ymax = (Γθmax)2 and θmax defined as the maximum angle from LOS Granot (2003a).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The factor Λ(y,φ) is an average over the magnetic field orientations in the plane of the ejecta as Λ(y,φ) ≡ ⟨(1−(ˆn′ · ˆB′)2) 1+α 2 ⟩ , (17) The polarization angle θp and Λ(y,φ) take different forms regarding the configuration of the magnetic field in the plane the GRB jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the case of an ordered magnetic field Bord we have : Λord(y,φ) ≈ � (1−y 1+y)2 cos2 φ+sin2 φ � 1+α 2 , (18) θp = φ+arctan � (1−y 1+y)cotφ � .' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19) The time-integrated linear polarization in the presence of an ordered magnetic field in the plane normal to the jet velocity is plotted as a function of the spectral index in the right panel of Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (8).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As it is seen the polarization degree increases towards higher values of α and lower values of ymax which can cover the observed polarization of GRB 110721A, GRB 160802A, and GRB 110301A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Therefore for a configuration with the globally ordered magnetic field, high values of linear polarization even larger than 50% are obtainable.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The degree of polarization for a magnetic field with locally tan- gled or random configuration is obtained by averaging over all direc- tions of the local magnetic field within the plane of the shock (Granot & Königl 2003a;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Sari 1999;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Gruzinov 1999;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Nava et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2016).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The presence of a random magnetic field leads to negligible values of net linear polarization measured by an on-axis observer.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the case of a random field behind the shock wave only if the observer is off-axis and the circular symmetry is broken, non-zero net polarization is measurable.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The total linear polarization arising from the whole jet which is subjected to a random field with a direction perpendicular to the jet velocity is given by Granot (2003a) Π⊥ Πmax = � y2 y1 dy(1+y)−2−α sin[2Ψ1(y)]G(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='α) Θ(1−ζ) � y1 0 dy H(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='α) (1+y)α+2 + � y2 y1 dy dy H(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='α) (1+y)α+2 � π−Ψ(y) π �,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (20) where Θ(1 − ζ) is the Heaviside step-function with ζ ≡ θobs/θ j as a parameter to define observer’s point of view,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' and G(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='α) = 1 2π � π 0 dφ �(1−y)2 (1+y)2 cos2 φ−sin2 φ �� 1− 4ycos2 φ (1+y)2 � α−1 2 ,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (21) H(y,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='α) = � π 0 dφ � 1− 4ycos2 φ (1+y)2 � 1+α 2 ,' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (22) cosΨ(y) = (1−ζ2)y j −y 2ζ√yy j .' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (23) In above expressions y1,2 = (1∓ζ)2yj and y j = (Γθ j)2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The variation of the linear polarization in the presence of a random field configura- tion measured by an off-axis observer is displayed in Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (9).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the left panel, the spectral indices are selected to be consistent with aver- age values reported in Table (5) for our target sample and for y j = 10.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the right panel, yj is changed while α = 1, it is found that the ap- peared peak has a width in order of 1/√y j.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' From Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (9), we see that the polarization degree is limited to small values for ζ < 1 while it is sharply increased for ζ ≈ 1 and finally reaches to an asymptotic limit at ζ > O(1).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It is seen that the Synchrotron radiation with B⊥ can potentially generate wide range of polarization values from low levels to moderate values which cover observed values associated to our sample.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In principle, various viewing angles θobs and different angular structures of the jet affect the measured fluence of GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Note that the fluence significantly decreases for a top-hat jet view- ing from outside the jet’s sharp edge, so high levels of polarization in off-axis jets may only be obtainable in very close bursts.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In fact, the detectibility of GRB polarization needs high-fluence sources and usually, the fluence rapidly drops below the detector threshold for a large off-axis observer.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The time-resolved spectral analysis in §4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1 showed thermal to non-thermal (KED-to-PFD) transitions in our sample where a sub- dominant component of the thermal emission during bursts is ob- served.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Observing hard values of the spectral indices during the bursts can be served as hints that LOS is not highly off-axis, since high latitude emission leads to a softer spectrum Lundman et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2013).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As it was reported in §4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2, a correlation between the polariza- tion and the isotropic energy π-Eγ,iso (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7b) has been observed within our sample, it is worth mentioning that higher polariza- tion values are recorded for closer bursts GRB 110301A (z=0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='36), GRB 110721A (z=0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='382), GRB 160802A (z=0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='90) and lower val- ues for farther sources GRB 140206B (z=2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73) and GRB 100826A (z=2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3) (Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7e).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The observed fluences of GRB 140206B and GRB 100826A is higher than other sources (see Table.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 4 and Fig.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7f) and due to their higher redshifts ζ can not obtain large values, however, low values of ζ would be enough to reproduce their measured polar- izations.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The local degree of linear polarization for a tangled or random field configuration for a thin ultrarelativistic shell modeling of the prompt emission by assuming α = 1 is obtained by averaging over all local magnetic field directions as Πlin rnd = Πlin max (b−1)sin2 θB 2+(b−1)sin2 θB (24) MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 9 where b ≡ 2⟨B2 ∥⟩/⟨B2 ⊥⟩ denotes the anisotropy of the magnetic field distribution as the ratio of the parallel B∥ to the perpendicular B⊥ components with respects to the shock direction, and θB is the an- gle between the LOS from the observer and the direction of the shock Sari (1999);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Gruzinov (1999).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the case of a globally ordered magnetic field configuration aligned with the jet direction (B → B∥, b → ∞), Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (24) returns back to Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19) and gives the maximum value of the linear polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The polarized emission may also originate from independent magnetic patches with various field orientation Li (2022a) where magnetic patches are locally coherent but distributed randomly in observed emission region.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In this case the measured polarization from different patches is estimated as Π = Πmax/ √ N, where N is the number of magnetic patches or equivalently multiple pulses where the coherence length of the magnetic field is as large as the emis- sion region in a single pulse and observed polarization is an average over multiple pulses (Gruzinov & Waxman 1999;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Granot & Königl 2003b).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The magnetic field which is generated within IS for KED jets has usually a coherence length much smaller than the angular size of the emission region which causes negligible net polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It has been shown that even by taking into account the angular structure of the flow the polarization is limited to Π ≲ 20% for photospheric emis- sion of a relativistically expanding fireball Ito et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lund- man et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014a);' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Parsotan et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The observed high val- ues of the polarization for GRB 110721A and GRB 160802A while they show the peak-KED pattern cannot be explained simply by the sub-photospheric dissipation model based on Comptonisation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Be- cause the multiple scatterings at large optical depths region leads to wash out the directionality of polarization vectors (Lundman et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018b).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' To explain the strong polarized signals, models invoking dis- sipation of ordered magnetic field are favored (Lyutikov et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2003;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Zhang & Yan 2011b;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' McKinney & Uzdensky 2012).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' A structured jet photosphere model may also generate polarized photons via Comp- ton scattering but with a different energy-dependence compare to the synchrotron model in the ordered magnetic field (Chang et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014b,a, 2013).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The Jitter radiation emitted by ultra-relativistic electrons acceler- ating in a small-scale random magnetic field (Medvedev 2000), can also generate a hard energy spectrum with the photon index as high as α = +0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Due to the random distribution of the magnetic field, jitter radiation is highly symmetric in the electron radiative plane, leading to the vanishing polarization degree for an on-axis observer (Mao & Wang 2013, 2017;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Mao et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The maximum level of polarization is obtainable when the emitting plane is viewed from the edge on, it can even reach up to 90% (Prosekin et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2016).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, for smaller off-axis viewing angles which can yield mea- surable fluences, jitter radiation causes almost negligible polariza- tion degree.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Meanwhile, regardless of the viewing angle the Jitter radiation cannot produce the observed high degree of polarisation close to the spectral peak energy of the jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' To summarize, polarization features can be explained either by the synchrotron radiation in the ordered/random magnetic field (Granot 2003b;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Granot & Königl 2003b;' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Nakar et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2003), the jet structure (Lazzati & Begelman 2009), or the observer’s viewing angle with re- spect to the jet (Lazzati et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004), even in the case of thermal radi- ation from the jet photosphere (Lundman et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014b).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' For a hybrid spectrum which include thermal and non-thermal components, we expect to see relatively high values of the polarization in the prompt emission which can be produced by synchrotron emission mecha- nism in the ordered magnetic field of the jet, and for random field configurations only for off-axis observers (Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' How- ever, the spectral properties of our target sample demonstrated that off-axis observations specially for the large viewing angle is not the case, and the observed values of the polarization most probably is a hint of the ordered magnetic field originating from the central en- gine.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Since from PFD jets towards HD and KED jets, polarization washout effects are increased gradually due to thermal photons, we would expect that the inequality πKED ≲ πHD ≲ πPED is satisfied if other conditions are fixed for a given jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Due to the different de- grees of polarization predicted by different emission models in var- ious energy bands, it is essential to have a high-sensitivity gamma- ray polarimeter with a wide band-pass to detect energy-dependent polarization signals and constrain different models (Zhang 2014).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, it should be noted that due to several free parameters in polarization models, upcoming more precise observations and theo- retical investigations are needed to discriminate between competing models in order to explain observed joint polarization and spectral properties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 6 CONCLUSION Early polarization observations during the prompt emission phase play a crucial role in understanding the radiation mechanism and jet composition of GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Observations over the past few decades suggest that the jet composition of GRBs may have diverse prop- erties.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' If the jet composition is matter-dominated (i.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', a fireball), the GRB prompt emission spectra would include a bright thermal component originating from the fireball photosphere.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Alternatively, if the jet composition is Poynting-flux-dominated, the GRB prompt emission spectra would include a dominant non-thermal compo- nent originating from the synchrotron radiation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Moreover, if the jet composition is hybrid-dominated, the GRB prompt emission spec- tra would include a thermal component originating from the fire- ball photosphere and a non-thermal component originating from the synchrotron radiation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It is highly speculated that the prompt emis- sion is likely expected to be strongly polarized owing to its non- thermal origin.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Consequently, a different level of polarization de- grees (πKED ≲ πHD ≲ πPED) during the prompt emission phase is nat- urally expected due to the different types of jet composition.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In this paper, we have collected a GRB sample in which all the bursts de- tected by Fermi/GBM and whose polarization detection in the emis- sion region was also reported in the literature, containing five inter- esting bursts (GRB 100826A, GRB 110301A, GRB 110721A, GRB 140206A, and GRB 160802A).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using the time-averaging polariza- tion observations and selecting the same epoch for the GBM data taken during the prompt emission phase, we then attempted to ex- plore the correlations between jet properties and polarization prop- erties of GRBs and aimed to confirm the validity of this correlation (πKED ≲ πHD ≲ πPED) from observations.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We first performed a detailed time-averaged spectral analysis for each burst in our target sample by using several frequency-used GRB spectral models and selected the best one by using information crite- ria (AIC and BIC).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The jet properties of GRBs can be classified into three categories based on their spectral analysis: the “KED”, “PFD”, and “HD” types.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using the spectral properties we then inferred their jet properties and discovered that all five bursts belong to the “HD”- jet type.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The lack of the other two types of jets (KED and PED) prevents us from validating this correlation (πKED ≲ πHD ≲ πPED).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Hopefully, upcoming instruments will provide high-sensitivity po- larization observations in the future, leading to well-sampled, well- studied data sets, enabling such statistical analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We next conducted a time-resolved spectral analysis for each in- MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 10 Li & Shakeri dividual burst by dividing the emission period into multiple-time slices using the BBlocks method using the Band-alone model.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Our refined time-resolved spectral analysis, on the other hand, further suggested that the “HD”-type has two subcategories: the peak-KED pattern and the KED-to-PFD transition pattern.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In our attempt to as- sess the jet properties of GRBs using Band-α evolution, we discov- ered that two bursts exhibit the peak-KED pattern (GRB 110721A and GRB 160802A) whereas the other three bursts show the KED- to-PFD transition pattern (GRB 110301A, GRB 140206A, and GRB 160625B).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' All five bursts found in the “HD”-type imply that the pho- tosphere emission may also be a possible mechanism to power the high-degree polarization observation.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We also made an attempt to explore the correlations between the polarization properties and several typical GRB observed quantities.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Using the same observed epoch during the prompt emission phase, our target sample allows for a reasonable comparison.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The corre- lations we attempted to study included the polarization degrees π correlated with (i) the cosmological rest-frame peak energy (Ep,z) of the νFν prompt emission spectrum, (ii) the isotropic-bolometric- equivalent emission energy Eγ,iso, (iii) the magnetization parameter σ0, (iv) the blackbody temperature kT, (v) the redshift z, and (vi) the corresponding energy fluence Sγ.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As a result, we discovered that a higher Ep,z, Eγ,iso, and kTz tend to have a lower-degree polarization π.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Lastly, we discovered that all five bursts in our target sample have a relatively high-degree polarization detection that seems to corre- late with the “HD”-jet type.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' If it is an intrinsic characteristic of GRBs, this could provide a clue to studying the radiation mechanism and jet composition of GRBs.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We have also discussed some physical interpretations of this interesting phenomenon.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Since the configura- tion of the magnetic field inside the jet is one of the crucial param- eters to determine the polarization degree, we discussed two main configurations (i.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='e.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' ordered and random fields), and their connec- tion to the jet composition is clarified.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We considered polarization patterns as a function of different dynamical parameters associated to the outflow materials, the spectral indices and the observer’s LOS with respect to the jet.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Combining the spectral analysis and the polar- ization measurements allowed us to find out the detection of polar- ization values Π > 50% during prompt emission of GRB 160802A, GRB 110721A and GRB 110301A is a piece of strong evidence for the synchrotron emission mechanism in the presence of an ordered magnetic field which can be advected from the GRB central engine.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Regarding the different properties of our target sample, we conclude that geometrical effects and large off-axis observations are unlikely responsible for the measured polarizations assuming random mag- netic fields within the jets.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Finally, there are some caveats that are worth mentioning when applying our analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (i) Spectrum.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We have resolved the jet proper- ties based on the low-energy spectrum.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' However, it may be difficult to classify jets as either KED or PFD jets based on the spectral index alone.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Indeed, a photospheric quasi-thermal component would have a harder low-energy spectral index as compared to an optically-thin synchrotron, but that does not guarantee that the jet is KED (an ex- ample, see Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2020).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (ii) Polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The degree of polariza- tion ultimately probes the (local) structure of the B-field in the emis- sion region.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' An ordered field would necessarily yield high polariza- tion whereas a tangled field would yield a very small polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' It is unclear, however, whether these field configurations are exclusive to a given jet configuration (or a particular level of magnetization).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In addition, the angular structure of the jet also plays an important role in governing the observed polarization.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Thus, due to the large range of model parameters, it is difficult to attribute a given level of polarization to a given jet composition.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' More discussion is provided in a recent review article (Gill et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2021).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (iii) Different instrument analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Currently, it is not clear why different instruments, namely, POLAR, IKAROS-GAP, and ASTROSAT/CZTI, are finding differ- ent levels of polarization for a small sample of GRBs (Chattopad- hyay et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' There is no consensus.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' POLAR is finding a rather low-level polarization, which is consistent with zero within 3σ of their quoted central values, whereas both IKAROS and AstroSAT are finding much higher levels.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Hard X-ray to soft gamma-ray po- larization measurements are very tricky and the analysis has to be carried out very carefully.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' As such, some of these measurements are probably not representative of GRBs and need to be further verified by future more precise instruments.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (iv) Time-resolved polarization analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' In the current analysis, none of the cases have shown time- resolved polarization measurements.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Even though the GRBs in our target sample have time-resolved spectral indices, not having corre- sponding polarization measurements makes it difficult to ascertain the properties of the B-field and outflows.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Acknowledgements.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' We thank Ramandeep Gill, Jonathan Gra- not, Rahim Moradi, Mi-Xiang Lan, Asaf Pe’er, Jin-Jun Geng, Christoffer Lundman, Remo Ruffini, and ICRANet members for many discussions on GRBs physics and phenomena.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' This research made use of the High Energy Astrophysics Science Archive Re- search Center (HEASARC) Online Service at the NASA/Goddard Space Flight Center (GSFC).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Data availability.' metadata={'source': 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metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-F.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Lei, W.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-H.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018, ApJS , 236, 26 Li, L.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Xue, S.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-S.' 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metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Ryde, F.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2022b, arXiv e-prints, arXiv:2212.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02141 Liang, E.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', & Zhang, B.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2005, ApJ , 633, 611 Liang, E.' metadata={'source': 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+page_content=', Murakami, T.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Nakamura, T.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2004, ApJ , 609, 935 Yonetoku, D.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Murakami, T.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Gunji, S.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011a, ApJ , 743, L30 —.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011b, ApJ , 743, L30 —.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012a, ApJ , 758, L1 —.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012b, ApJ , 758, L1 Zhang, B.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2014, International Journal of Modern Physics D, 23, 1430002 —.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2018, The Physics of Gamma-Ray Bursts, doi:10.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1017/9781139226530 Zhang, B.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', & Mészáros, P.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2001, ApJ , 552, L35 Zhang, B.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', & Yan, H.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011a, ApJ , 726, 90 —.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2011b, ApJ , 726, 90 Zhang, F.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-W.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Shao, L.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Yan, J.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-Z.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', & Wei, D.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-M.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2012, ApJ , 750, 88 Zhang, S.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-N.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Kole, M.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', Bao, T.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='-W.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=', et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' 2019, Nature Astronomy, arXiv:1901.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='04207 MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 12 Li & Shakeri Table 1 A sample of GRB polarimetric observations GRB PD PA Energy band Time Significance Instrument Ref.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' z (Fermi ID) (π%) (◦) (t-t0) (σ) (For polarization) 100826A(957) 27±11 159±18, 75±20 γ-ray 0-100s 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='9σ IKAROS-GAP Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2011b) NA 110301A(214) 70±22 73±11 γ-ray 0-7s 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7σ IKAROS-GAP Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2012a) NA 110721A(200) 84+16 −28 160±11 γ-ray 0-11s 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3σ IKAROS-GAP Yonetoku et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2012a) 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='382 140206A(275) > 28 80±15 γ-ray 4-26s 90% confidence INTEGRAL-IBIS Götz et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2014) 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73 160802A(259) 85±29 ∼-32 hard X-rays 0-20.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='34s ∼3σ AstroSat-CZTI Chand et al.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2018) NA MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 13 Table 2 Estimated values of redshift using the Yonetoku relation GRB tstart∼tstop S Eobs p Fobs p kc Lp z (s) (keV) (erg cm−2 s−1) (erg s−1) (Estimated) 100826957 18.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='208∼22.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='288 107.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='97 459±20 (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='42±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='10)×10−5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='85 (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='27±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='10)×1053 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3 110301214 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='876∼4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='126 107.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='60 126±6 (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='36±0.' 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metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='79 385±39 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='04±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='80)×10−5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='95 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='05±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='80)×1053 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='90 MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) ' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='14 ' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='Li & Shakeri ' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='Table 3 Comparison of AIC/BIC between the best model and other models ' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='GRB ' metadata={'source': 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metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='07 (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='14+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='57 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='49)×10−2 7+1 −1 (5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='90+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='69)×10−6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='04+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='03 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='03 110721200 0∼11 114.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='01+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='09 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='09)×10−2 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='20+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 1620+234 −229 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='19+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='10 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='10 (1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='33 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='34)×10−5 33+2 −2 (6.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='94+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='66 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='63)×10−6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='03+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='01 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='01 140206275 4∼26 170.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='87+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='11 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='11)×10−2 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='06+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 679+43 −43 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='32+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='08 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='08 (4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='78+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='53 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='52)×10−5 27+1 −1 (4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='57+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='25 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='24)×10−6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='05+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='01 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='01 160802259 0∼20.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='34 151.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='7 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='89+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='21 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='21)×10−2 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='00+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='03 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='03 515+44 −44 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='23+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='73 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='74 (9.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='11+1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='22 −1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='21)×10−5 25+1 −1 (3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='85+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='55 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='41)×10−6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='09+0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 −0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='02 MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 17 1 0 2 4 6 8 10 redshift 10 1 100 101 102 103 GRB 100826A Estimated value 0 2 4 6 8 10 redshift 10 1 100 101 102 103 GRB 110301A Estimated value 0 2 4 6 8 10 redshift 10 1 100 101 102 103 GRB 160802A Estimated value Figure 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Estimated redshift using the Yonetoku relation for three bursts (GRB 100826A, GRB 110301A, and GRB 160802A).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The yellow and cyan lines represent the left and right function of Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (5), and their intersection point (purple color) is the estimated value of redshift.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 18 Li & Shakeri 1 20 0 20 40 60 80 100 120 140 Time (s) 0 20 40 60 80 100 =27±11% 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (S > 20) (10 < S < 20) (S < 10) 100826A 101 102 103 104 105 Photon Energy - keV 100 101 102 103 104 keV × [keV 1S 1cm 2] Band fits Blackbody Band+Blackbody NAI7 NAI8 BGO1 Figure 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Left panel: prompt emission GBM light curve (overlaid in gray) and polarization observations in γ-ray/hard X-ray energy bands (cyan shaded area), as well as the temporal evolution of α based on the time-resolved spectral analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The horizontal dashed line represents the limiting value of α = −2/3 for electrons in the slow-cooling regime.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Right panel: the spectral data and its best-fit model (Band+BB) during the time epoch (see Table 1 and Table 4) of the matching polarization observations.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 19 1 5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 7.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 10.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 12.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 15.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 Time (s) 0 20 40 60 80 100 =70±22% 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (S > 20) (10 < S < 20) (S < 10) 110301A 101 102 103 104 105 Photon Energy - keV 100 101 102 103 104 keV × [keV 1S 1cm 2] Band fits Blackbody Band+Blackbody NAI7 NAI8 NAIb BGO1 nai bgo Figure 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Same as Figure 2 but for GRB 110301A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 20 Li & Shakeri 1 15 10 5 0 5 10 15 20 25 30 Time (s) 0 20 40 60 80 100 = (84+16 28)% 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (S > 20) (10 < S < 20) (S < 10) 110721A 101 102 103 104 105 Photon Energy - keV 101 102 103 104 keV × [keV 1S 1cm 2] Band fits Blackbody Band+Blackbody NAI6 NAI7 NAI9 BGO1 nai bgo Figure 4.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Same as Figure 2 but for GRB 110721A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 21 1 20 0 20 40 60 80 100 120 140 Time (s) 0 20 40 60 80 100 (Upper limit) 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (S > 20) (10 < S < 20) (S < 10) 140206A 101 102 103 104 105 Photon Energy - keV 101 102 103 104 keV × [keV 1S 1cm 2] Band fits Blackbody Band+Blackbody NAI0 NAI1 NAI3 BGO0 nai bgo Figure 5.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Same as Figure 2 but for GRB 140206A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 22 Li & Shakeri 1 20 10 0 10 20 30 40 Time (s) 0 20 40 60 80 100 = 85 ± 29 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 (S > 20) (10 < S < 20) (S < 10) 160802A 101 102 103 104 105 Photon Energy - keV 101 102 103 104 keV × [keV 1S 1cm 2] Band fits Blackbody Band+Blackbody NAI2 BGO0 nai bgo Figure 6.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Same as Figure 2 but for GRB 160802A.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 23 1 101 102 103 104 Ep, z[keV] 100 101 102 103 a 100826A 110301A 110721A 140206B 160802A 100 101 102 103 Power-law index= -0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='41±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='24 1051 1052 1053 1054 1055 E , iso (erg) 100 101 102 103 b 100826A 110301A 110721A 140206B 160802A 100 101 102 103 Power-law index= -0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='20±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='04 100 101 102 103 104 KT,z[keV] 100 101 102 103 c 100826A 110301A 110721A 140206B 160802A 100 101 102 103 Power-law index= -0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='32±0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='18 100 101 102 1+ 0 100 101 102 103 d 100826A 110301A 110721A 140206B 160802A 100 101 102 103 0 1 2 3 4 5 6 7 8 9 redshift 100 101 102 103 e 100826A 110301A 110721A 140206A 160802A 10 6 10 5 10 4 10 3 10 2 Fluence (erg cm 2) 100 101 102 103 f 100826A 110301A 110721A 140206A 160802A Figure 7.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Scatter plots of polarization degree π versus several other observed quantities: (a) the cosmological rest-frame peak energy (Ep,z) of the νFν prompt emission spectrum, (b) the isotropic-bolometric-equivalent emission energy Eγ,iso, (c) the magnetization parameter σ0, (d) the blackbody temperature kT, (e) the redshift z, and (d) the corresponding energy fluence Sγ.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Data points with different colors indicate the different bursts in our target sample.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The solid lines (grey) are the best fit using the power-law model with 2σ (95% confidence interval) error region (shadow area).' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) 24 Li & Shakeri 1 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 3.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 100 101 102 100826A 110301A 110721A 160802A 140206A 100 101 102 lin max = + 1 + 5/3 ymax=1 ymax=2 ymax=5 ymax=10 ymax=102 110721A 160802A 110301A 100826A 140206A 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 α Π/Πmax Figure 8.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Left: The maximum degree of the linear polarization applying synchrotron emission model (Πlin max Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19)) with observed data using α indices based on a time-integrated spectral analysis.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' Right: Time integrated polarization degree in the presence of an ordered magnetic field Bord with in the plane of ejecta (Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (19)) measured by an on-axis observer (θobs = 0), the evolution of the polarization is plotted in terms of α for different values of ymax = (Γθmax)2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023) Time-averaging Polarimetric and Spectral Properties of GRBs 25 1 α=0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='72 α=0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='84 α=1 α=1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 Random B⟂ yj = 10 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='1 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='3 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='5 ζ=θobs/θj Π/Πmax yj=103 yj=102 yj=10 yj=1 α = 1 Random B⟂ 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 1.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='8 2.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='0 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='2 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='4 0.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='6 ζ=θobs/θj Π/Πmax Figure 9.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' The time integrated polarization for a random magnetic field B⊥ which lies entirely in the plane of the shock (Eq.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (20)) as a function of the off-axis parameter ζ = θobs/θ j for different values of spectral index α (left) and yj = (Γθ j)2 (right) as labeled.' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' MNRAS 000, 1–?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content='?' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'} +page_content=' (2023)' metadata={'source': '/home/zjlab/wf/langchain-ChatGLM/knowledge_base/KNAyT4oBgHgl3EQfsfkS/content/2301.00576v1.pdf'}