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Delayed MeV-GeV gamma-ray photons in gamma-ray bursts: An effect of electromagnetic cascades of very high energy gamma rays in the infrared microwave background
Cheng LX(程凌翔); Cheng, LX; Cheng, KS
1996
发表期刊ASTROPHYSICAL JOURNAL
卷号459期号:2页码:L79-L82
通讯作者UNIV HONG KONG,DEPT PHYS,HONG KONG,HONG KONG
文章类型Article
摘要We show that the electromagnetic cascade of very high energy gamma-rays from gamma-ray bursts in the IR/microwave background will produce delayed MeV-GeV photons. Monte Carlo simulations have been performed to study this process. The distance of GB 940217 is estimated to be not less than 120 Mpc using our model, which supports a cosmological origin for this source. We also show that the time delays of gamma-ray photons are inversely proportional to their energy. Our model does not require the presence of intergalactic magnetic fields.
关键词gamma rays, bursts infrared, general
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:A1996TX19600009
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240299
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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Cheng LX,Cheng, LX,Cheng, KS. Delayed MeV-GeV gamma-ray photons in gamma-ray bursts: An effect of electromagnetic cascades of very high energy gamma rays in the infrared microwave background[J]. ASTROPHYSICAL JOURNAL,1996,459(2):L79-L82.
APA 程凌翔,Cheng, LX,&Cheng, KS.(1996).Delayed MeV-GeV gamma-ray photons in gamma-ray bursts: An effect of electromagnetic cascades of very high energy gamma rays in the infrared microwave background.ASTROPHYSICAL JOURNAL,459(2),L79-L82.
MLA 程凌翔,et al."Delayed MeV-GeV gamma-ray photons in gamma-ray bursts: An effect of electromagnetic cascades of very high energy gamma rays in the infrared microwave background".ASTROPHYSICAL JOURNAL 459.2(1996):L79-L82.
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