Gamma rays from Centaurus A

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Gamma rays from Centaurus A

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dc.contributor.author GUPTA, N en_US
dc.date.accessioned 2011-08-03T18:36:33Z en_US
dc.date.accessioned 2011-12-26T12:54:20Z en_US
dc.date.accessioned 2011-12-27T05:42:03Z
dc.date.available 2011-08-03T18:36:33Z en_US
dc.date.available 2011-12-26T12:54:20Z en_US
dc.date.available 2011-12-27T05:42:03Z
dc.date.issued 2008 en_US
dc.identifier.citation JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (6), - en_US
dc.identifier.issn 1475-7516 en_US
dc.identifier.uri http://dx.doi.org/10.1088/1475-7516/2008/06/022 en_US
dc.identifier.uri http://dspace.library.iitb.ac.in/xmlui/handle/10054/9116 en_US
dc.identifier.uri http://hdl.handle.net/10054/9116
dc.description.abstract Centaurus A, the cosmic ray accelerator a few Mpc away from us, is possibly one of the nearest sources of extremely high energy cosmic rays. We investigate whether the gamma ray data currently available from Centaurus A in the GeV-TeV energy band can be explained with only proton-proton interactions. We show that for a single power law proton spectrum, mechanisms of gamma-ray production other than proton-proton interactions are needed inside this radio-galaxy to explain the gamma ray flux observed by EGRET, upper limits from HESS/CANGAROO-III and the correlated extremely energetic cosmic ray events observed by the Pierre Auger experiment. In future, with better gamma-ray data, and simultaneous observation with gamma-ray and cosmic ray detectors, it will be possible to carry out such studies on different sources in more detail. en_US
dc.language.iso en en_US
dc.publisher IOP PUBLISHING LTD en_US
dc.subject cosmic-rays en_US
dc.subject emission en_US
dc.subject.other ultra high energy cosmic rays en_US
dc.subject.other ultra high energy photons and neutrinos en_US
dc.title Gamma rays from Centaurus A en_US
dc.type Article en_US


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