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TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM
Hou, Shu-Jin1,2,3; Liu, Tong1,2,4; Gu, Wei-Min1,2; Lin, Da-Bin5,6; Sun, Mou-Yuan1,2,7,8; Wu, Xue-Feng3; Lu, Ju-Fu1,2
2014-01-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume781Issue:1Pages:0
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.
KeywordAccretion, Accretion Disks Black Hole Physics Gamma-ray Burst: Individual (Grb 130925a)
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/2041-8205/781/1/L19
WOS KeywordGAMMA-RAY BURSTS ; CENTRAL ENGINE ; 1ST SURVEY ; DISKS ; SWIFT ; LONG
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Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000329582400019
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/10615
Collection南极天文中心
Affiliation1.Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China
2.Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Fujian, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
5.Guangxi Univ, Dept Phys, Nanning 530004, Guangxi, Peoples R China
6.Guangxi Univ, GXU NAOC Ctr Astrophys & Space Sci, Nanning 530004, Guangxi, Peoples R China
7.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
8.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA
Recommended Citation
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]. ASTROPHYSICAL JOURNAL LETTERS,2014,781(1):0.
APA Hou, Shu-Jin.,Liu, Tong.,Gu, Wei-Min.,Lin, Da-Bin.,Sun, Mou-Yuan.,...&Lu, Ju-Fu.(2014).TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM.ASTROPHYSICAL JOURNAL LETTERS,781(1),0.
MLA Hou, Shu-Jin,et al."TIME EVOLUTION OF FLARES IN GRB 130925A: JET PRECESSION IN A BLACK HOLE ACCRETION SYSTEM".ASTROPHYSICAL JOURNAL LETTERS 781.1(2014):0.
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