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Hou, SJ; Liu, T; Gu, WM; Lin, DB; Sun, MY; Wu, XF; Lu, JF; Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM
发表期刊ASTROPHYSICAL JOURNAL LETTERS
语种英语
关键词Gamma-ray Bursts Central Engine 1st Survey Disks Swift Long
摘要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.
2014
ISSN2041-8205
卷号781期号:1
学科领域Physics
DOI10.1088/2041-8205/781/1/L19
收录类别SCI
项目资助者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] ; 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] ; 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] ; 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]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15508
专题理论物理所科研产出_SCI论文
通讯作者Liu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
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GB/T 7714
Hou, SJ,Liu, T,Gu, WM,et al. TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM[J]. ASTROPHYSICAL JOURNAL LETTERS,2014,781(1).
APA Hou, SJ.,Liu, T.,Gu, WM.,Lin, DB.,Sun, MY.,...&Liu, T .(2014).TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM.ASTROPHYSICAL JOURNAL LETTERS,781(1).
MLA Hou, SJ,et al."TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM".ASTROPHYSICAL JOURNAL LETTERS 781.1(2014).
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