Gamma-ray burst afterglows from jetted shocks in wind environments
Gou, LJ; Dai, ZG; Huang, YF; Lu, T
刊名ASTRONOMY & ASTROPHYSICS
2001
卷号368期号:2页码:464-470
关键词gamma-rays : bursts ISM : jets and outflows stars : mass loss shock waves
学科分类Astronomy & Astrophysics
DOI10.1051/0004-6361:20000352
通讯作者Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Nanjing Univ, Astron & Astrophys Ctr E China, Nanjing 210093, Peoples R China
文章类型Article
英文摘要Gamma-ray bursts with long durations are widely thought to arise from the collapse of massive stars. where the wind environment is unavoidable. It is also believed that gamma -ray bursts come from jets. Considering these two points in this paper, we calculate the evolution of a highly collimated jet that expands in a stellar wind environment and the expected afterglow from such a jet. We use a set of refined dynamical equations and a realistic lateral speed of the jet, and find: (1) There is no observable break at the time when the Lorentz factor of the jet is equal to the inverse of its initial half-opening angle. (2) No obvious break appears at the time when the blast wave transits from the relativistic to the non-relativistic phase. (3) For the wind case, there is no flattening tendency even up to 10(9) s. (3) Compared with the homogeneous medium case, our calculated flux is weaker in the stellar wind case. Finally, we find that two kinds of GRB models (neutron star mergers and massive star collapses) may be discriminated in our numerical results.
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS记录号WOS:000168306200012
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237589
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Gou, LJ,Dai, ZG,Huang, YF,et al. Gamma-ray burst afterglows from jetted shocks in wind environments[J]. ASTRONOMY & ASTROPHYSICS,2001,368(2):464-470.
APA Gou, LJ,Dai, ZG,Huang, YF,&Lu, T.(2001).Gamma-ray burst afterglows from jetted shocks in wind environments.ASTRONOMY & ASTROPHYSICS,368(2),464-470.
MLA Gou, LJ,et al."Gamma-ray burst afterglows from jetted shocks in wind environments".ASTRONOMY & ASTROPHYSICS 368.2(2001):464-470.
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