PMO OpenIR  > 宇宙伽马暴、中子星及相关物理研究团组
Early afterglow emission as a probe of the density profile of the medium surrounding gamma-ray bursts
Jin, Z. P. ; Xu, D. ; Covino, S. ; D'Avanzo, P. ; Antonelli, L. A. ; Wei, D. M.
2012
Source PublicationMemorie della Societa Astronomica Italiana Supplement
Volume21Pages:194-197
AbstractThe gamma-ray bursts (GRBs) with durations longer than 2 seconds, namely long gamma-ray bursts, are believed to have a massive star progenitor and should be born in the free stellar wind medium holding up to a radius > 1017cm. We propose to constrain the density profile of the medium with the early afterglow data and find out that for the interstellar medium (ISM) an early rapid increase of the afterglow flux is possible while in the free wind medium there is no such a signature. For GRB 060418 and GRB 060607A we show that the data is well consistent with the ISM model and the number density is low. While for GRB 081109A, the X-ray and optical data are consistent with the forward shock emission of an ultra-relativistic ejecta expanding into a wind bubble, in which the free wind terminates at a radius ˜ 4.5×1017cm, beyond which the medium is ISM-like. The implication of these results has been discussed.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8095
Collection宇宙伽马暴、中子星及相关物理研究团组
Recommended Citation
GB/T 7714
Jin, Z. P.,Xu, D.,Covino, S.,et al. Early afterglow emission as a probe of the density profile of the medium surrounding gamma-ray bursts[J]. Memorie della Societa Astronomica Italiana Supplement,2012,21:194-197.
APA Jin, Z. P.,Xu, D.,Covino, S.,D'Avanzo, P.,Antonelli, L. A.,&Wei, D. M..(2012).Early afterglow emission as a probe of the density profile of the medium surrounding gamma-ray bursts.Memorie della Societa Astronomica Italiana Supplement,21,194-197.
MLA Jin, Z. P.,et al."Early afterglow emission as a probe of the density profile of the medium surrounding gamma-ray bursts".Memorie della Societa Astronomica Italiana Supplement 21(2012):194-197.
Files in This Item:
File Name/Size DocType Version Access License
2012205Early aftergl(312KB) 开放获取LicenseView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Jin, Z. P.]'s Articles
[Xu, D.]'s Articles
[Covino, S.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Jin, Z. P.]'s Articles
[Xu, D.]'s Articles
[Covino, S.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Jin, Z. P.]'s Articles
[Xu, D.]'s Articles
[Covino, S.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2012205Early afterglow emission as a probe of the density profile of the medium surrounding gamma-ray bursts .pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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