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题名: Constraining the origin of TeV photons from gamma-ray bursts with delayed MeV-GeV emission formed by interaction with cosmic infrared/microwave background photons
作者: Wang, XY; Cheng, KS; Dai, ZG; Lu Tan(陆埮)
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2004-03-20
卷号: 604, 期号:1, 页码:306-311
关键词: diffuse radiation ; gamma rays : bursts ; magnetic fields
学科分类: Astronomy & Astrophysics
文章类型: Article
英文摘要: It has been suggested that electromagnetic cascade of very high-energy gamma-rays from gamma-ray bursts (GRBs) in the infrared/microwave background can produce delayed MeV-GeV photons. This delay could be caused by the angular spreading effect of the scattered microwave photons or deflection of the secondary pairs due to the intergalactic magnetic field. Very high-energy TeV photons of GRBs could be produced by a few mechanisms including the proton-synchrotron radiation and electron inverse Compton emission from GRB internal shocks as well as external shocks. We suggest that the information provided by the delayed emission could give constraints on models for TeV gamma-rays. A more accurate calculation of the delayed time caused by the angular spreading effect is presented by considering recent observations of the extragalactic infrared background and the theoretical high-redshift infrared background. We also suggest that the dependence of the maximum time delay of scattered photons on their energies, if determined by future GLAST detector, could differentiate the two mechanisms causing the time delay.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: VERY-HIGH-ENERGY ; INTERGALACTIC MAGNETIC-FIELDS ; COMPTON EMISSION ; AFTERGLOWS ; RADIATION ; ABSORPTION ; PREDICTIONS ; SPECTRUM ; DURATION ; DYNAMOS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000220301000025
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/10950
Appears in Collections:陆埮_期刊论文

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作者单位: 1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
2.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China

Recommended Citation:
王祥玉、郑广生、戴子高、陆 埮.Constraining the Origin of TeV Photons from Gamma-Ray Bursts with Delayed MeV-GeV Emission Formed by Interaction with Cosmic Infrared/Microwave Background Photons,ApJ,2004,604(306):
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文件名: 071-2004-ApJ-WaCDL-Constraining the Origin of TeV Photons from Gamma-Ray Bursts with Delayed MeV-GeV Emission-604#-306-311.pdf
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