ICAR Research Data Repository for Knowledge Management
Gamma rays from Centaurus A
DSpace at IIT Bombay
View Archive Info| Field | Value | |
| Title |
Gamma rays from Centaurus A
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| Creator |
GUPTA, N
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| Subject |
cosmic-rays
emission ultra high energy cosmic rays ultra high energy photons and neutrinos |
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| Description |
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.
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| Publisher |
IOP PUBLISHING LTD
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| Date |
2011-08-03T18:36:33Z
2011-12-26T12:54:20Z 2011-12-27T05:42:03Z 2011-08-03T18:36:33Z 2011-12-26T12:54:20Z 2011-12-27T05:42:03Z 2008 |
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| Type |
Article
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| Identifier |
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, (6), -
1475-7516 http://dx.doi.org/10.1088/1475-7516/2008/06/022 http://dspace.library.iitb.ac.in/xmlui/handle/10054/9116 http://hdl.handle.net/10054/9116 |
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| Language |
en
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