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; Gao, He4; Huang, Chang-Yin1,6 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2014-06-10 |
| 卷号 | 788期号:1 |
| 关键词 | accretion black hole physics magnetic fields accretion disks |
| ISSN号 | 0004-637X |
| 通讯作者 | Lei, WH (reprint author), Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China. |
| 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 |
| 学科主题 | Astronomy & Astrophysics |
| 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 | http://iopscience.iop.org/article/10.1088/0004-637X/788/1/32/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000337095200032 |
| 公开日期 | 2016-06-01 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9441]  |
| 专题 | 云南天文台_中国科学院天体结构与演化重点实验室 |
| 作者单位 | 1.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3.Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China 4.Department of Physics and Astronomy, University of Nevada Las Vegas, 4505 Maryland Parkway, Box 454002, Las Vegas, NV 89154-4002, USA 5.Kavli Institute for Astronomy and Astrophysics and Department of Astronomy, Peking University, Beijing 100871, China 6.School of Mathematics and Statistics, Huazhong University of Science and Technology, 430074 Wuhan, 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). |
| 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). |
| 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). |
入库方式： OAI收割
来源：云南天文台
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