中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Polarization of Astrophysical Events with Precessing Jets

文献类型:期刊论文

AuthorLan, Mi-Xiang1,2; Xue, Rui2; Xiong DR(熊定荣)3; Lei, Wei-Hua4; Wu, Xue-Feng1; Dai, Zi-Gao2,5
SourceThe Astrophysical Journal
Issued Date2019-06-24
Volume878Issue:2
ISSN0004-637X
Keywordgalaxies: jets gamma-ray burst: general magnetic fields polarization radiation mechanisms: non-thermal
DOI10.3847/1538-4357/ab21ce
Rank第3完成单位
SubtypeArticle
English Abstract

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.

Subject天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
URL查看原文
Publish PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS KeywordLOG-PARABOLIC SPECTRA ; TIDAL DISRUPTION ; BLACK-HOLE ; ACCRETION DISKS ; PARTICLE-ACCELERATION ; LIGHT CURVES ; RAY ; OUTBURST ; ENERGY ; AFTERGLOW
WOS Research AreaAstronomy & Astrophysics
Language英语
WOS IDWOS:000472749100002
PublisherIOP PUBLISHING LTD
源URL[http://ir.ynao.ac.cn/handle/114a53/20329]  
Collection云南天文台_丽江天文观测站(南方基地)
Corresponding AuthorLan, Mi-Xiang
Affiliation1.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
Recommended Citation
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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来源:云南天文台

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