Gamma rays from centaurus A

Gupta, Nayantara

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/4468

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DC Field	Value	Language
dc.contributor.author	Gupta, Nayantara	-
dc.date.accessioned	2012-05-08T04:47:34Z	-
dc.date.available	2012-05-08T04:47:34Z	-
dc.date.issued	2008-06	-
dc.identifier.citation	Journal of Cosmology and Astroparticle Physics, 2008, Vol.6, p022	en
dc.identifier.issn	1475-7516 (Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/4468	-
dc.description	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)	en
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 γ-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 γ-ray data, and simultaneous observation with γ-ray and cosmic ray detectors, it will be possible to carry out such studies on different sources in more detail.	en
dc.language.iso	en	en
dc.publisher	IOP Publishing and SISSA	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2008JCAP...06..022G	en
dc.relation.uri	http://arxiv.org/abs/0804.3017	en
dc.relation.uri	http://dx.doi.org/10.1088/1475-7516/2008/06/022	en
dc.rights	2008 IOP Publishing and SISSA	en
dc.title	Gamma rays from centaurus A	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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