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Sw 1644+57_GRB 110328A THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW
Lang Shao ; Fu-Wen Zhang ; Yi-Zhong Fan ; Da-Ming Wei
2011
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume734Issue:L33Pages:1-5
AbstractSw 1644+57/GRB 110328A is a remarkable cosmological X-ray outburst detected by the {\it Swift} satellite. Its early-time ($t\lesssim 0.1$ days since the trigger) X-ray emission resembles some gamma-ray bursts (GRBs), e.g., GRB 090417B. But the late-time flaring X-ray plateau lasting $> 40$ days renders it unique. We examine the possibilities that the outburst is a super-long GRB powered either by the fallback accretion onto a nascent black hole or by a millisecond pulsar, and find out that these two scenarios can address some but not all of the main observational features. We then focus on the model of tidal disruption of a (giant) star by a massive black hole. The mass of the tidal-disrupted star is estimated to be $\gtrsim$ a few solar masses. A simple/straightforward argument for a magnetic origin of the relativistic outflow is presented.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/4549
Collection宇宙伽马暴、中子星及相关物理研究团组
Recommended Citation
GB/T 7714
Lang Shao,Fu-Wen Zhang,Yi-Zhong Fan,et al. Sw 1644+57_GRB 110328A THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW[J]. The Astrophysical Journal Letters,2011,734(L33):1-5.
APA Lang Shao,Fu-Wen Zhang,Yi-Zhong Fan,&Da-Ming Wei.(2011).Sw 1644+57_GRB 110328A THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW.The Astrophysical Journal Letters,734(L33),1-5.
MLA Lang Shao,et al."Sw 1644+57_GRB 110328A THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW".The Astrophysical Journal Letters 734.L33(2011):1-5.
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