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Article: 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

TitleDelayed 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
Authors
KeywordsGamma rays: bursts
Infrared - general
Issue Date1996
PublisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/ApJ
Citation
The Astrophysical Journal, 1996, v. 459, p. L79-L82 How to Cite?
AbstractWe 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.
Persistent Identifierhttp://hdl.handle.net/10722/43163
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266

 

DC FieldValueLanguage
dc.contributor.authorCheng, LXen_HK
dc.contributor.authorCheng, KSen_HK
dc.date.accessioned2007-03-23T04:40:27Z-
dc.date.available2007-03-23T04:40:27Z-
dc.date.issued1996en_HK
dc.identifier.citationThe Astrophysical Journal, 1996, v. 459, p. L79-L82en_HK
dc.identifier.issn0004-637Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/43163-
dc.description.abstractWe 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.en_HK
dc.format.extent596601 bytes-
dc.format.extent12158 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/ApJen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsThe Astrophysical Journal. Copyright © University of Chicago Press.en_HK
dc.subjectGamma rays: burstsen_HK
dc.subjectInfrared - generalen_HK
dc.titleDelayed MeV-GeV Gamma-Ray Photons in Gamma-Ray Bursts: an Effect of Electromagnetic Cascades of Very High Energy Gamma-Rays in the Infrared/Microwave Backgrounden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=459&spage=L79&epage=L82&date=1996&atitle=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+Backgrounden_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/309949en_HK
dc.identifier.hkuros11053-

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