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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
Source PublicationASTROPHYSICAL JOURNAL LETTERS
Language英语
KeywordGamma-ray Bursts Central Engine 1st Survey Disks Swift Long
AbstractGRB 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
Volume781Issue:1
Subject AreaPhysics
DOI10.1088/2041-8205/781/1/L19
Indexed BySCI
Funding OrganizationNational 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]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15508
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLiu, T (reprint author), Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China.
Recommended Citation
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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