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Synchrotron Polarization Radiative Transfer: Relativistic Thermal Electron Contribution
Mao JR(毛基荣)1,2,3; Covino, Stefano4; Wang JC(王建成)1,2,3; Mao JR(毛基荣), Email: jirongmao@mail.ynao.ac.cn
发表期刊ASTROPHYSICAL JOURNAL
2018-06-20
卷号860期号:2
DOI10.3847/1538-4357/aac5d9
产权排序第1完成单位
收录类别SCI
关键词Gamma-ray Burst: General Gravitational Waves Ism: Supernova Remnants Polarization Radiation Mechanisms: Non-thermal Stars: Neutron
摘要Relativistic thermal electrons moving in a large-scale magnetic field can produce synchrotron radiation. Linear synchrotron polarization can also be produced by the relativistic thermal electrons. In this paper, we utilize a hybrid thermal-nonthermal electron energy distribution to calculate circular synchrotron polarization. We further compute the radiative transfer of the synchrotron polarization in the optical and radio bands when we consider the contribution of the thermal electrons. We attempt to apply the polarization results to some astrophysical objects, such as kilonova like AT 2017gfo/GW170817, the fast radio burst (FRB), the gamma-ray burst afterglow, and the supernova remnant. The large optical depth of radiative transfer affects the small polarization degrees of these populations when the media surrounding the synchrotron sources take heavy absorption to the polarized photons. We need a strong magnetic field in our model to reproduce the linear and circular polarization properties that were observed in FRB 140514. This indicates that FRBs have a neutron star origin.
项目资助者National Natural Science Foundation of China(11673062, 11573060, 11661161010) ; Hundred Talent Program of Chinese Academy of Sciences ; Major Program of Chinese Academy of Sciences(KJZD-EW-M06) ; Oversea Talent Program of Yunnan Province ; ASI-INAF grant(I/004/11/3)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000436030500003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]FAST RADIO-BURST ; TURBULENT MAGNETIC-FIELD ; COSMIC-RAY TRANSPORT ; CIRCULAR-POLARIZATION ; COLD MEDIA ; MODELS ; SHELL ; ACCELERATION ; ENVIRONMENT ; AFTERGLOW
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12409
专题丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
通讯作者Mao JR(毛基荣), Email: jirongmao@mail.ynao.ac.cn
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 650011 Kunming, Yunnan Province, People's Republic of China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 650011 Kunming, People's Republic of China
4.Brera Astronomical Observatory, via Bianchi 46, I-23807, Merate (LC), Italy
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Mao JR,Covino, Stefano,Wang JC,et al. Synchrotron Polarization Radiative Transfer: Relativistic Thermal Electron Contribution[J]. ASTROPHYSICAL JOURNAL,2018,860(2).
APA Mao JR,Covino, Stefano,Wang JC,&Mao JR.(2018).Synchrotron Polarization Radiative Transfer: Relativistic Thermal Electron Contribution.ASTROPHYSICAL JOURNAL,860(2).
MLA Mao JR,et al."Synchrotron Polarization Radiative Transfer: Relativistic Thermal Electron Contribution".ASTROPHYSICAL JOURNAL 860.2(2018).
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