Sw 1644+57/GRB 110328A: THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW

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	Sw 1644+57/GRB 110328A: THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW
	Shao, Lang 1,2,3; Zhang, Fu-Wen 1,2,4; Fan, Yi-Zhong1,2 ; Wei, Da-Ming1,2
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2011-06-20
卷号	734 期号:2 页码:L33(5pp)
关键词	gamma-ray burst: general radiation mechanisms: non-thermal X-rays: general
ISSN号	2041-8205
英文摘要	Sw 1644+57/GRB 110328A is a remarkable cosmological X-ray outburst detected by the Swift satellite. Its early-time (t less than or similar to 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 greater than or similar to a few solar masses. A simple/straightforward argument for a magnetic origin of the relativistic outflow is presented.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	GAMMA-RAY BURSTS ; MASSIVE BLACK-HOLE ; GALACTIC-CENTER ; TIDAL DISRUPTION ; BINARY STARS ; LIGHT CURVES ; AFTERGLOW ; FLARES ; ENERGY ; MODEL
收录类别	SCI
语种	英语
WOS记录号	WOS:000293135700008
公开日期	2012-08-07
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/4541]
专题	紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China 3.Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China 4.Guilin Univ Technol, Coll Sci, Guilin 541004, Guangxi, Peoples R China
推荐引用方式 GB/T 7714	Shao, Lang,Zhang, Fu-Wen,Fan, Yi-Zhong,et al. Sw 1644+57/GRB 110328A: THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,734(2):L33(5pp).
APA	Shao, Lang,Zhang, Fu-Wen,Fan, Yi-Zhong,&Wei, Da-Ming.(2011).Sw 1644+57/GRB 110328A: THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW.ASTROPHYSICAL JOURNAL LETTERS,734(2),L33(5pp).
MLA	Shao, Lang,et al."Sw 1644+57/GRB 110328A: THE PHYSICAL ORIGIN AND THE COMPOSITION OF THE RELATIVISTIC OUTFLOW".ASTROPHYSICAL JOURNAL LETTERS 734.2(2011):L33(5pp).