Gamma rays from centaurus A
| 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.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.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.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 |
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