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Gamma-ray bursts: optical afterglows in the deep Newtonian phase
Huang, YF; Cheng, KS
2003
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号341期号:1页码:#REF!
通讯作者Huang, YF (reprint author), Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China.
摘要Gamma-ray burst remnants become trans-relativistic typically in days to tens of days, and they enter the deep Newtonian phase in tens of days to months, during which the majority of shock-accelerated electrons will no longer be highly relativistic. However, a small portion of electrons are still accelerated to ultra-relativistic speeds and are capable of emitting synchrotron radiation. The distribution function for electrons is re-derived here so that synchrotron emission from these relativistic electrons can be calculated. Based on the revised model, optical afterglows from both isotropic fireballs and highly collimated jets are studied numerically, and compared to analytical results. In the beamed cases, it is found that, in addition to the steepening due to the edge effect and the lateral expansion effect, the light curves are universally characterized by a flattening during the deep Newtonian phase.
文章类型Article
关键词radiation mechanisms : non-thermal stars : neutron ISM : jets and outflows gamma-rays : bursts
学科领域Astronomy & Astrophysics
DOI10.1046/j.1365-8711.2003.06430.x
收录类别SCI
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000182577300023
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被引频次:49[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/311005/227267
专题粒子天体物理中心
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Huang, YF,Cheng, KS. Gamma-ray bursts: optical afterglows in the deep Newtonian phase[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2003,341(1):#REF!.
APA Huang, YF,&Cheng, KS.(2003).Gamma-ray bursts: optical afterglows in the deep Newtonian phase.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,341(1),#REF!.
MLA Huang, YF,et al."Gamma-ray bursts: optical afterglows in the deep Newtonian phase".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 341.1(2003):#REF!.
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