IHEP OpenIR  > 粒子天体物理中心
Temporal variability in early afterglows of short gamma-ray bursts
Li Z(李卓); Li, Z; Dai, ZG; Lu, T
2003
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号345期号:4页码:1236-1240
通讯作者Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Particle Astrophys Lab, Beijing 100039, Peoples R China
文章类型Article
摘要The shock model has successfully explained the observed behaviours of afterglows from long gamma-ray bursts (GRBs). Here, we use it to investigate the so-called early afterglows from short GRBs, which arise from blast waves that are not decelerated considerably by their surrounding medium. We consider a nearby medium loaded with e(+/-) pairs. First, the temporal behaviours show a soft-to-hard spectral evolution, from optical to hard X-ray, and then a usual hard-to-soft evolution after the blast waves begin to decelerate. The light curves show variability and consist of two peaks. The first peak, owing to the pair effect, can be observed in the X-ray, although too faint and too short in the optical. The second peak will be detected easily by Swift. We show that detections of the double-peak structure in the light curves of early afterglows are very helpful in determining all the shock parameters of short GRBs, including both the parameters of the relativistic source and the surroundings. Besides, from the requirement that the forward-shock emission in short GRBs should be below the Burst and Transient Source Experiment (BATSE) detection threshold, we give a strong constraint on the shock model parameters. In particular, the initial Lorentz factor of the source is limited to be no more than similar to10(3), and the ambient medium density n is inferred to be low, n less than or similar to 10(-1) cm(-3).
关键词radiation mechanisms : non-thermal relativity gamma-rays : bursts
学科领域Astronomy & Astrophysics
DOI10.1046/j.1365-2966.2003.07039.x
URL查看原文
语种英语
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000186565900014
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239216
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Li Z,Li, Z,Dai, ZG,et al. Temporal variability in early afterglows of short gamma-ray bursts[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2003,345(4):1236-1240.
APA 李卓,Li, Z,Dai, ZG,&Lu, T.(2003).Temporal variability in early afterglows of short gamma-ray bursts.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,345(4),1236-1240.
MLA 李卓,et al."Temporal variability in early afterglows of short gamma-ray bursts".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 345.4(2003):1236-1240.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
6362.pdf(101KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[李卓]的文章
[Li, Z]的文章
[Dai, ZG]的文章
百度学术
百度学术中相似的文章
[李卓]的文章
[Li, Z]的文章
[Dai, ZG]的文章
必应学术
必应学术中相似的文章
[李卓]的文章
[Li, Z]的文章
[Dai, ZG]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。