中国科学院紫金山天文台机构知识库
Advanced  
PMO OpenIR  > 暗物质和空间天文实验室  > 期刊论文
题名: Short GRBs: Opening Angles, Local Neutron Star Merger Rate, and Off-axis Events for GRB/GW Association
作者: Jin, Zhi-Ping; Li, Xiang; Wang, Hao; Wang, Yuan-Zhu; He, Hao-Ning; Yuan, Qiang; Zhang, Fu-Wen; Zou, Yuan-Chuan; Fan, Yi-Zhong; Wei, Da-Ming
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2018
卷号: 857, 期号:2, 页码:128
英文摘要: The jet breaks in the afterglow light curves of short gamma-ray bursts (SGRBs), rarely detected so far, are crucial for estimating the half-opening angles of the ejecta (theta(j)) and hence the neutron star merger rate. In this work, we report the detection of jet decline behaviors in GRB 150424A and GRB 160821B, and find theta j similar to 0.1 rad. Together with five events reported before 2015 and three others "identified" recently (GRB 050709, GRB 060614, and GRB 140903A), we have a sample consisting of nine SGRBs and one long-short GRB with reasonably estimated theta(j). In particular, three Swift bursts in the sample have redshifts z <= 0.2, with which we estimate the local neutron star merger rate density to be similar to 1109(-657)(+1432) Gpc(-3) yr(-1) or 162(-83)(+140) Gpc(-3) yr(-1) if the narrowly beamed GRB 061201 is excluded. Inspired by the typical theta(j) similar to 0.1 rad found currently, we further investigate whether the off-beam GRBs (in the uniform jet model) or the off-axis events (in the structured jet model) can significantly enhance the GRB/GW association. For the former, the enhancement is at most moderate, while for the latter the enhancement can be much greater and a high GRB/GW association probability of similar to 10% is possible. We also show that the data of GRB 160821B may contain a macronova/kilonova emission component with a temperature of similar to 3100 K at similar to 3.6 days after the burst and more data are needed to ultimately clarify.
语种: 英语
WOS记录号: WOS:000430827000011
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/17997
Appears in Collections:暗物质和空间天文实验室_期刊论文

Files in This Item:
File Name/ File Size Content Type Version Access License
2018088.pdf(1196KB)期刊论文作者接受稿限制开放View 联系获取全文
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Jin, Zhi-Ping]'s Articles
[Li, Xiang]'s Articles
[Wang, Hao]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Jin, Zhi-Ping]‘s Articles
[Li, Xiang]‘s Articles
[Wang, Hao]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: 2018088.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2018  中国科学院紫金山天文台 - Feedback
Powered by CSpace