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Article: Constraining the origin of TeV photons from gamma-ray bursts with delayed MeV-GeV emission formed by interaction with cosmic infrared/microwave background photons

TitleConstraining the origin of TeV photons from gamma-ray bursts with delayed MeV-GeV emission formed by interaction with cosmic infrared/microwave background photons
Authors
KeywordsAstronomy physics
Issue Date2004
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2004, v. 604 n. 1 I, p. 306-311 How to Cite?
AbstractIt 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.
Persistent Identifierhttp://hdl.handle.net/10722/43414
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, XYen_HK
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorDai, ZGen_HK
dc.contributor.authorLu, Ten_HK
dc.date.accessioned2007-03-23T04:45:14Z-
dc.date.available2007-03-23T04:45:14Z-
dc.date.issued2004en_HK
dc.identifier.citationAstrophysical Journal Letters, 2004, v. 604 n. 1 I, p. 306-311en_HK
dc.identifier.issn2041-8205en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43414-
dc.description.abstractIt 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.en_HK
dc.format.extent132374 bytes-
dc.format.extent12158 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_HK
dc.relation.ispartofAstrophysical Journal Lettersen_HK
dc.rightsThe Astrophysical Journal. Copyright © University of Chicago Press.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAstronomy physicsen_HK
dc.titleConstraining the origin of TeV photons from gamma-ray bursts with delayed MeV-GeV emission formed by interaction with cosmic infrared/microwave background photonsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-637X&volume=604&issue=1 pt 1&spage=306&epage=311&date=2004&atitle=Constraining+the+Origin+of+TeV+Photons+from+Gamma-Ray+Bursts+with+Delayed+MeVGeV+Emission+Formed+by+Interaction+with+Cosmic+Infrared/Microwave+Background+Photonsen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1086/381745en_HK
dc.identifier.scopuseid_2-s2.0-2442429594en_HK
dc.identifier.hkuros85870-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2442429594&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume604en_HK
dc.identifier.issue1 Ien_HK
dc.identifier.spage306en_HK
dc.identifier.epage311en_HK
dc.identifier.isiWOS:000220301000025-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWang, XY=7501857391en_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridDai, ZG=7201387760en_HK
dc.identifier.scopusauthoridLu, T=7402684810en_HK

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