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Prompt ultraviolet-to-soft X-ray emission of gamma-ray bursts: Application to GRB 031203?
Li Z(黎卓); Song LM(宋黎明); Li, Z; Song, LM
2004
发表期刊ASTROPHYSICAL JOURNAL
卷号608期号:1页码:L17-L20
通讯作者Chinese Acad Sci, Inst High Energy Phys, Ctr Particle Astrophys, Beijing 100039, Peoples R China
摘要We discuss the prompt emission of gamma-ray bursts (GRBs), allowing for gammagamma pair production and synchrotron self-absorption. The observed hard spectra suggest heavy pair loading in GRBs. The reemission of the generated pairs results in the energy transmission from high-energy gamma rays to long-wavelength radiation. Because of strong self-absorption, the synchrotron radiation by pairs is in an optically thick regime, showing a thermal-like spectral bump in the extreme-ultraviolet/softX-ray band, other than the peak from the main burst. Recently, the prompt soft X-ray emission of GRB 031203 was detected thanks to the discovery of a delayed dust echo, and it seems to be consistent with the model prediction of a double-peak structure. The confirmation of the thermal-like feature and the double-peak structure by observation would indicate that the dominant radiation mechanism in GRBs is synchrotron rather than inverse Compton radiation.
文章类型Article
关键词gamma rays : bursts radiation mechanisms : nonthermal relativity
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
DOI10.1086/422098
URL查看原文
语种英语
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000221881600005
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被引频次:25[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/311005/240257
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. Prompt ultraviolet-to-soft X-ray emission of gamma-ray bursts: Application to GRB 031203?[J]. ASTROPHYSICAL JOURNAL,2004,608(1):L17-L20.
APA 黎卓,宋黎明,Li, Z,&Song, LM.(2004).Prompt ultraviolet-to-soft X-ray emission of gamma-ray bursts: Application to GRB 031203?.ASTROPHYSICAL JOURNAL,608(1),L17-L20.
MLA 黎卓,et al."Prompt ultraviolet-to-soft X-ray emission of gamma-ray bursts: Application to GRB 031203?".ASTROPHYSICAL JOURNAL 608.1(2004):L17-L20.
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