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Polarization of Astrophysical Events with Precessing Jets
Lan, Mi-Xiang1,2; Xue, Rui2; Xiong DR(熊定荣)3; Lei, Wei-Hua4; Wu, Xue-Feng1; Dai, Zi-Gao2,5
发表期刊The Astrophysical Journal
2019-06-24
卷号878期号:2
DOI10.3847/1538-4357/ab21ce
产权排序第3完成单位
收录类别SCI
关键词galaxies: jets gamma-ray burst: general magnetic fields polarization radiation mechanisms: non-thermal
摘要

Abstract A central compact object (CCO; e.g., a black hole) with an accretion disk has been suggested as the common central engine of various astrophysical phenomena, such as gamma-ray bursts (GRBs), tidal disruption events (TDEs), and active galactic nuclei (AGNs). A jet powered by such a system might precess due to the misalignment of the angular momenta of the CCO and accretion disk. Some quasiperiodic behaviors observed in the light curves of these phenomena can be well interpreted within the framework of a precessing jet model. In this paper, we study the emission polarization of precessing jets in these three kinds of phenomena. The polarization angle also shows a gradual change for the synchrotron emission in both the random and toroidal magnetic field configurations with the precessing jet, while it can only change abruptly by 90° for the nonprecessing top-hat jet. Polarization properties are periodic due to the assumptions made in our model. The polarization observations are crucial to confirm the precession nature of jets in GRBs, TDEs, and AGNs.

语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000472749100002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]LOG-PARABOLIC SPECTRA ; TIDAL DISRUPTION ; BLACK-HOLE ; ACCRETION DISKS ; PARTICLE-ACCELERATION ; LIGHT CURVES ; RAY ; OUTBURST ; ENERGY ; AFTERGLOW
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/20330
专题南方基地
通讯作者Lan, Mi-Xiang
作者单位1.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, People’s Republic of China; lanmixiang@126.com, xfwu@pmo.ac.cn
2.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People’s Republic of China; dzg@nju.edu.cn
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China
4.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
5.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, People’s Republic of China
推荐引用方式
GB/T 7714
Lan, Mi-Xiang,Xue, Rui,Xiong DR,et al. Polarization of Astrophysical Events with Precessing Jets[J]. The Astrophysical Journal,2019,878(2).
APA Lan, Mi-Xiang,Xue, Rui,Xiong DR,Lei, Wei-Hua,Wu, Xue-Feng,&Dai, Zi-Gao.(2019).Polarization of Astrophysical Events with Precessing Jets.The Astrophysical Journal,878(2).
MLA Lan, Mi-Xiang,et al."Polarization of Astrophysical Events with Precessing Jets".The Astrophysical Journal 878.2(2019).
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