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QUASI-PERIODIC VARIATIONS IN X-RAY EMISSION AND LONG-TERM RADIO OBSERVATIONS: EVIDENCE FOR A TWO-COMPONENT JET IN Sw J1644+57
Wang, Jiu-Zhou1; Lei, Wei-Hua1,2,3; Wang, Ding-Xiong1; Zou, Yuan-Chuan1; Zhang, Bing4,5,6; Gao, He4; Huang, Chang-Yin1,7
2014-06-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume788Issue:1Pages:0
AbstractThe continued observations of Sw J1644+57 in X-ray and radio bands accumulated a rich data set to study the relativistic jet launched in this tidal disruption event. The X-ray light curve of Sw J1644+57 from 5-30 days presents two kinds of quasi=periodic variations: a 200 s quasi=periodic oscillation (QPO) and a 2.7 day quasi=periodic variation. The latter has been interpreted by a precessing jet launched near the Bardeen-Petterson radius of a warped disk. Here we suggest that the similar to 200 s QPO could be associated with a second, narrower jet sweeping the observer line-of-sight periodically, which is launched from a spinning black hole in the misaligned direction with respect to the black hole's angular momentum. In addition, we show that this two-component jet model can interpret the radio light curve of the event, especially the re-brightening feature starting similar to 100 days after the trigger. From the data we infer that inner jet may have a Lorentz factor of Gamma(j) similar to 5.5 and a kinetic energy of E-k,E-iso similar to 3.0 x 10(52) erg, while the outer jet may have a Lorentz factor of Gamma(j) similar to 2.5 and a kinetic energy of E-k,E-iso similar to 3.0 x 10(53) erg.
KeywordAccretion, Accretion Disks Black Hole Physics Magnetic Fields
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/788/1/32
WOS KeywordTIDAL DISRUPTION EVENT ; SUPERMASSIVE BLACK-HOLE ; SWIFT J1644+57 ; ACCRETION DISKS ; BLANDFORD-ZNAJEK ; EARLY AFTERGLOWS ; CENTRAL ENGINE ; EPISODIC JETS ; BURSTS ; MODEL
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000337095200032
Citation statistics
Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10608
Collection南极天文中心
Affiliation1.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
5.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China
6.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
7.Huazhong Univ Sci & Technol, Sch Math & Stat, Wuhan 430074, Peoples R China
Recommended Citation
GB/T 7714
Wang, Jiu-Zhou,Lei, Wei-Hua,Wang, Ding-Xiong,et al. QUASI-PERIODIC VARIATIONS IN X-RAY EMISSION AND LONG-TERM RADIO OBSERVATIONS: EVIDENCE FOR A TWO-COMPONENT JET IN Sw J1644+57[J]. ASTROPHYSICAL JOURNAL,2014,788(1):0.
APA Wang, Jiu-Zhou.,Lei, Wei-Hua.,Wang, Ding-Xiong.,Zou, Yuan-Chuan.,Zhang, Bing.,...&Huang, Chang-Yin.(2014).QUASI-PERIODIC VARIATIONS IN X-RAY EMISSION AND LONG-TERM RADIO OBSERVATIONS: EVIDENCE FOR A TWO-COMPONENT JET IN Sw J1644+57.ASTROPHYSICAL JOURNAL,788(1),0.
MLA Wang, Jiu-Zhou,et al."QUASI-PERIODIC VARIATIONS IN X-RAY EMISSION AND LONG-TERM RADIO OBSERVATIONS: EVIDENCE FOR A TWO-COMPONENT JET IN Sw J1644+57".ASTROPHYSICAL JOURNAL 788.1(2014):0.
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