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Article: Pulsed gamma rays from Geminga

TitlePulsed gamma rays from Geminga
Authors
Issue Date1994
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0004-640X
Citation
Astrophysics And Space Science, 1994, v. 222 n. 1-2, p. 1-7 How to Cite?
AbstractThe pulsed gamma ray spectrum is obtained by analyzing COS-B data of observation no. 14, 39, 54 and 64. We find that the pulsed spectrum differs significantly from that of previous reports in which the pulsed component and steady component are not separated. A clear spectral break of the pulsed spectrum occurs at ~ 100 MeV and the majority of the steady emission is concentrated in the lower energy band. We fit the pulsed spectrum by both the outer gap model and the polar gap model and conclude that only the outer gap model can explain the observed spectrum. Furthermore, the gamma ray spectrum suggests that Geminga is located at a distance ~ 300 pc and is a nearly orthogonal rotator. © 1994 Kluwer Academic Publishers.
Persistent Identifierhttp://hdl.handle.net/10722/175067
ISSN
2015 Impact Factor: 1.678
2015 SCImago Journal Rankings: 0.667
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCheng, KSen_US
dc.contributor.authorMa, YQen_US
dc.date.accessioned2012-11-26T08:49:04Z-
dc.date.available2012-11-26T08:49:04Z-
dc.date.issued1994en_US
dc.identifier.citationAstrophysics And Space Science, 1994, v. 222 n. 1-2, p. 1-7en_US
dc.identifier.issn0004-640Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/175067-
dc.description.abstractThe pulsed gamma ray spectrum is obtained by analyzing COS-B data of observation no. 14, 39, 54 and 64. We find that the pulsed spectrum differs significantly from that of previous reports in which the pulsed component and steady component are not separated. A clear spectral break of the pulsed spectrum occurs at ~ 100 MeV and the majority of the steady emission is concentrated in the lower energy band. We fit the pulsed spectrum by both the outer gap model and the polar gap model and conclude that only the outer gap model can explain the observed spectrum. Furthermore, the gamma ray spectrum suggests that Geminga is located at a distance ~ 300 pc and is a nearly orthogonal rotator. © 1994 Kluwer Academic Publishers.en_US
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0004-640Xen_US
dc.relation.ispartofAstrophysics and Space Scienceen_US
dc.titlePulsed gamma rays from Gemingaen_US
dc.typeArticleen_US
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_US
dc.identifier.authorityCheng, KS=rp00675en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/BF00627079en_US
dc.identifier.scopuseid_2-s2.0-34249765831en_US
dc.identifier.volume222en_US
dc.identifier.issue1-2en_US
dc.identifier.spage1en_US
dc.identifier.epage7en_US
dc.identifier.isiWOS:A1994QD51000001-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridCheng, KS=9745798500en_US
dc.identifier.scopusauthoridMa, YQ=7404700311en_US

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