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Linear Polarization, Circular Polarization, and Depolarization of Gamma-ray Bursts: A Simple Case of Jitter Radiation
Mao JR(毛基荣)1,2,3; Wang JC(王建成)1,2,3
Source PublicationASTROPHYSICAL JOURNAL
2017-04-01
Volume838Issue:2
DOI10.3847/1538-4357/aa6628
Contribution Rank第1完成单位
Indexed BySCI
KeywordGamma-ray Burst: General Radiation Mechanisms: Non-thermal Shock Waves Turbulence
Abstract

Linear and circular polarizations of gamma-ray bursts (GRBs) have been detected recently. We adopt a simplified model to investigate GRB polarization characteristics in this paper. A compressed two-dimensional turbulent slab containing stochastic magnetic fields is considered, and jitter radiation can produce the linear polarization under this special magnetic field topology. Turbulent Faraday rotation measure (RM) of this slab makes strong wavelength-dependent depolarization. The jitter photons can also scatter with those magnetic clumps inside the turbulent slab, and a nonzero variance of the Stokes parameter V can be generated. Furthermore, the linearly and circularly polarized photons in the optical and radio bands may suffer heavy absorptions from the slab. Thus we consider the polarized jitter radiation transfer processes. Finally, we compare our model results with the optical detections of GRB 091018, GRB 121024A, and GRB 131030A. We suggest simultaneous observations of GRB multi-wavelength polarization in the future.

Funding ProjectHundred Talent Program ; Major Program of the Chinese Academy of Sciences[KJZD-EW-M06] ; National Natural Science Foundation of China[11673062] ; National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010] ; Oversea Talent Program of Yunnan Province ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09000000]
Funding OrganizationHundred Talent Program ; Major Program of the Chinese Academy of Sciences[KJZD-EW-M06] ; National Natural Science Foundation of China[11673062, 11573060, 11661161010] ; Oversea Talent Program of Yunnan Province ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences[XDB09000000]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000398118500002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordRELATIVISTIC COLLISIONLESS SHOCKS ; MAGNETIC-FIELD STRUCTURE ; FULLY-DEVELOPED TURBULENCE ; EARLY OPTICAL AFTERGLOWS ; EXTENDED RADIO-SOURCES ; SYNCHROTRON-RADIATION ; PROMPT EMISSION ; LIGHT CURVES ; GRB 041219A ; VARIABLE POLARIZATION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10012
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorMao JR(毛基荣)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Mao JR,Wang JC. Linear Polarization, Circular Polarization, and Depolarization of Gamma-ray Bursts: A Simple Case of Jitter Radiation[J]. ASTROPHYSICAL JOURNAL,2017,838(2).
APA Mao JR,&Wang JC.(2017).Linear Polarization, Circular Polarization, and Depolarization of Gamma-ray Bursts: A Simple Case of Jitter Radiation.ASTROPHYSICAL JOURNAL,838(2).
MLA Mao JR,et al."Linear Polarization, Circular Polarization, and Depolarization of Gamma-ray Bursts: A Simple Case of Jitter Radiation".ASTROPHYSICAL JOURNAL 838.2(2017).
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