TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM | |
Hou, Shu-Jin ; Liu, Tong ; Gu, Wei-Min ; Lin, Da-Bin ; Sun, Mou-Yuan ; Wu, Xue-Feng ; Lu, Ju-Fu ; Liu T(刘彤) ; Gu WM(顾为民) ; Lu JF(卢炬甫) | |
刊名 | http://dx.doi.org/10.1088/2041-8205/781/1/L19 |
2014-01-20 | |
关键词 | GAMMA-RAY BURSTS CENTRAL ENGINE 1ST SURVEY DISKS SWIFT LONG |
英文摘要 | National Basic Research Program of China (973 Program) [2013CB834900, 2014CB845800]; National Natural Science Foundation of China [11103015, 11222328, 11233006, 11322328, 11333004, U1331101]; One-Hundred-Talents Program; Youth Innovation Promotion Association of Chinese Academy of Sciences; China Scholarship Council [[2013] 3009]; GRB 130925A, composed of three gamma-ray emission episodes and a series of orderly flares, has been detected by Swift, Fermi, Konus-Wind, and INTEGRAL. If the third weakest gamma-ray episode can be considered a giant flare, we find that after the second gamma-ray episode observed by INTEGRAL located at about 2000 s, a positive relation exists between the time intervals of the adjacent flares and the time since the episode. We suggest that the second gamma-ray episode and its flares originate from the resumption of the accretion process due to the fragments from the collapsar falling back; such a relation may be related to a hyperaccretion disk around a precessed black hole (BH). We propose that the origin and time evolution of the flares, and the approximately symmetrical temporal structure and spectral evolution of the single flare can be explained well by a jet precession model. In addition, the mass and spin of the BH can be constrained, which indicates a stellar-mass, fast-rotating BH located in the center of GRB 130925A. |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/92038] |
专题 | 物理技术-已发表论文 |
推荐引用方式 GB/T 7714 | Hou, Shu-Jin,Liu, Tong,Gu, Wei-Min,et al. TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM[J]. http://dx.doi.org/10.1088/2041-8205/781/1/L19,2014. |
APA | Hou, Shu-Jin.,Liu, Tong.,Gu, Wei-Min.,Lin, Da-Bin.,Sun, Mou-Yuan.,...&卢炬甫.(2014).TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM.http://dx.doi.org/10.1088/2041-8205/781/1/L19. |
MLA | Hou, Shu-Jin,et al."TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM".http://dx.doi.org/10.1088/2041-8205/781/1/L19 (2014). |
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