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Article: Pulsed gamma rays from Geminga
Title | Pulsed gamma rays from Geminga |
---|---|
Authors | |
Issue Date | 1994 |
Publisher | Springer 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? |
Abstract | The 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 Identifier | http://hdl.handle.net/10722/175067 |
ISSN | 2023 Impact Factor: 1.8 2023 SCImago Journal Rankings: 0.405 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Cheng, KS | en_US |
dc.contributor.author | Ma, YQ | en_US |
dc.date.accessioned | 2012-11-26T08:49:04Z | - |
dc.date.available | 2012-11-26T08:49:04Z | - |
dc.date.issued | 1994 | en_US |
dc.identifier.citation | Astrophysics And Space Science, 1994, v. 222 n. 1-2, p. 1-7 | en_US |
dc.identifier.issn | 0004-640X | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/175067 | - |
dc.description.abstract | The 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.language | eng | en_US |
dc.publisher | Springer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0004-640X | en_US |
dc.relation.ispartof | Astrophysics and Space Science | en_US |
dc.title | Pulsed gamma rays from Geminga | en_US |
dc.type | Article | en_US |
dc.identifier.email | Cheng, KS: hrspksc@hkucc.hku.hk | en_US |
dc.identifier.authority | Cheng, KS=rp00675 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1007/BF00627079 | en_US |
dc.identifier.scopus | eid_2-s2.0-34249765831 | en_US |
dc.identifier.volume | 222 | en_US |
dc.identifier.issue | 1-2 | en_US |
dc.identifier.spage | 1 | en_US |
dc.identifier.epage | 7 | en_US |
dc.identifier.isi | WOS:A1994QD51000001 | - |
dc.publisher.place | Netherlands | en_US |
dc.identifier.scopusauthorid | Cheng, KS=9745798500 | en_US |
dc.identifier.scopusauthorid | Ma, YQ=7404700311 | en_US |
dc.identifier.issnl | 0004-640X | - |