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题名: A possible macronova in the late afterglow of the long-short burst GRB 060614
作者: Yang, Bin1, 2; Jin ZhiPing(金志平)1; Li, Xiang1, 2; Covino, Stefano3; Zheng XianZhong(郑宪忠)1; Hotokezaka, Kenta4; Fan YiZhong(范一中)1, 5; Piran, Tsvi4; Wei DaMing(韦大明)1
刊名: NATURE COMMUNICATIONS
出版日期: 2015-06-01
卷号: 6, 页码:7323
学科分类: 天文和天体物理
DOI: 10.1038/ncomms8323
文章类型: Article
英文摘要: Long-duration (> 2 s) gamma-ray bursts that are believed to originate from the death of massive stars are expected to be accompanied by supernovae. GRB 060614, that lasted 102 s, lacks a supernova-like emission down to very stringent limits and its physical origin is still debated. Here we report the discovery of near-infrared bump that is significantly above the regular decaying afterglow. This red bump is inconsistent with even the weakest known supernova. However, it can arise from a Li-Paczynski macronova-the radioactive decay of debris following a compact binary merger. If this interpretation is correct, GRB 060614 arose from a compact binary merger rather than from the death of a massive star and it was a site of a significant production of heavy r-process elements. The significant ejected mass favours a black hole-neutron star merger but a double neutron star merger cannot be ruled out.
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: GAMMA-RAY BURST ; NEUTRON-STAR MERGERS ; RADIOACTIVELY POWERED TRANSIENTS ; COMPACT OBJECT MERGERS ; R-PROCESS ; DYNAMICAL EJECTA ; BINARY MERGERS ; LIGHT CURVES ; GRB-060614 ; SUPERNOVA
收录类别: SCI
所属项目名称: PMO_LIB-IR
语种: 英语
WOS记录号: WOS:000357172100006
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/14854
Appears in Collections:宇宙伽马暴、中子星及相关物理研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.INAF, Brera Astron Observ, I-23807 Merate, Italy
4.Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel
5.Nanjing Univ, Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210046, Jiangsu, Peoples R China
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