QUASI-PERIODIC VARIATIONS IN X-RAY EMISSION AND LONG-TERM RADIO OBSERVATIONS: EVIDENCE FOR A TWO-COMPONENT JET IN Sw J1644+57
文献类型：期刊论文
| 作者 | Wang, Jiu-Zhou1; Lei, Wei-Hua1,2,3; Wang, Ding-Xiong1; Zou, Yuan-Chuan1; Zhang, Bing4,5,6; Gao, He4; Huang, Chang-Yin1,7 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-06-10 |
| 卷号 | 788期号:1页码:0 |
| 关键词 | accretion, accretion disks black hole physics magnetic fields |
| ISSN号 | 0004-637X |
| 英文摘要 | The 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | TIDAL DISRUPTION EVENT ; SUPERMASSIVE BLACK-HOLE ; SWIFT J1644+57 ; ACCRETION DISKS ; BLANDFORD-ZNAJEK ; EARLY AFTERGLOWS ; CENTRAL ENGINE ; EPISODIC JETS ; BURSTS ; MODEL |
| 收录类别 | SCI |
| 原文出处 | 10.1088/0004-637X/788/1/32 |
| 语种 | 英语 |
| WOS记录号 | WOS:000337095200032 |
| 公开日期 | 2014-11-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10608]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。