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

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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
刊名	ASTROPHYSICAL JOURNAL
	1996
卷号	459 期号:2 页码:L79-L82
关键词	gamma rays, bursts infrared, general
通讯作者	UNIV HONG KONG,DEPT PHYS,HONG KONG,HONG KONG
英文摘要	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.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:A1996TX19600009
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240299]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	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.