The Macronova in GRB 050709 and the GRB-macronova connection

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	The Macronova in GRB 050709 and the GRB-macronova connection
	Jin, Zhi-Ping; Hotokezaka, Kenta; Li, Xiang; Tanaka, Masaomi; D'Avanzo, Paolo; Fan, Yi-Zhong; Covino, Stefano; Wei, Da-Ming; Piran, Tsvi
刊名	NATURE COMMUNICATIONS
	2016
卷号	7 期号:0 页码:12898
英文摘要	GRB 050709 was the first short Gamma-ray Burst (sGRB) with an identified optical counterpart. Here we report a reanalysis of the publicly available data of this event and the discovery of a Li-Paczynski macronova/kilonova that dominates the optical/infrared signal at t > 2.5 days. Such a signal would arise from 0.05 M-circle dot r-process material launched by a compact binary merger. The implied mass ejection supports the suggestion that compact binary mergers are significant and possibly main sites of heavy r-process nucleosynthesis. Furthermore, we have reanalysed all afterglow data from nearby short and hybrid GRBs (shGRBs). A statistical study of shGRB/macronova connection reveals that macronova may have taken place in all these GRBs, although the fraction as low as 0.18 cannot be ruled out. The identification of two of the three macronova candidates in the I-band implies a more promising detection prospect for ground-based surveys.
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16893]
专题	紫金山天文台_紫金山天文台青海观测站
推荐引用方式 GB/T 7714	Jin, Zhi-Ping,Hotokezaka, Kenta,Li, Xiang,et al. The Macronova in GRB 050709 and the GRB-macronova connection[J]. NATURE COMMUNICATIONS,2016,7(0):12898.
APA	Jin, Zhi-Ping.,Hotokezaka, Kenta.,Li, Xiang.,Tanaka, Masaomi.,D'Avanzo, Paolo.,...&Piran, Tsvi.(2016).The Macronova in GRB 050709 and the GRB-macronova connection.NATURE COMMUNICATIONS,7(0),12898.
MLA	Jin, Zhi-Ping,et al."The Macronova in GRB 050709 and the GRB-macronova connection".NATURE COMMUNICATIONS 7.0(2016):12898.