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X-ray afterglows of gamma-ray bursts in the synchrotron self-Compton dominated regime
Li Z(黎卓); Song LM(宋黎明); Li, Z; Song, LM
2004
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号349期号:2页码:742-746
通讯作者Chinese Acad Sci, Inst High Energy Phys, Particle Astrophys Lab, Beijing 100039, Peoples R China
摘要We consider in this paper the effect of the synchrotron self-Compton process on X-ray afterglows of gamma-ray bursts. We find that, for a wide range of parameter values, especially for the standard values which imply that the energy in the electrons behind the afterglow shock is tens of times as large as that in the magnetic field, the electron cooling is dominated by Compton cooling rather than synchrotron one. This leads to a different evolution of cooling frequency in the synchrotron emission component, and hence a different (flatter) light-curve slope in the X-ray range. This effect should be taken into account when estimating the afterglow parameters by X-ray observational data. For somewhat higher ambient density, the synchrotron self-Compton emission may be directly detected in the X-ray range, showing varying spectral slopes and quite a steep light-curve slope.
文章类型Article
关键词radiation mechanisms : non-thermal relativity gamma-rays : bursts
学科领域Astronomy & Astrophysics
DOI10.1111/j.1365-2966.2004.07548.x
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000220694600033
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238403
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
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Li Z,Song LM,Li, Z,et al. X-ray afterglows of gamma-ray bursts in the synchrotron self-Compton dominated regime[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,349(2):742-746.
APA 黎卓,宋黎明,Li, Z,&Song, LM.(2004).X-ray afterglows of gamma-ray bursts in the synchrotron self-Compton dominated regime.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,349(2),742-746.
MLA 黎卓,et al."X-ray afterglows of gamma-ray bursts in the synchrotron self-Compton dominated regime".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 349.2(2004):742-746.
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