Please use this identifier to cite or link to this item:
http://hdl.handle.net/2289/4468
Title: | Gamma rays from centaurus A |
Authors: | Gupta, Nayantara |
Issue Date: | Jun-2008 |
Publisher: | IOP Publishing and SISSA |
Citation: | Journal of Cosmology and Astroparticle Physics, 2008, Vol.6, p022 |
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. |
Description: | Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations) |
URI: | http://hdl.handle.net/2289/4468 |
ISSN: | 1475-7516 (Online) |
Alternative Location: | http://adsabs.harvard.edu/abs/2008JCAP...06..022G http://arxiv.org/abs/0804.3017 http://dx.doi.org/10.1088/1475-7516/2008/06/022 |
Copyright: | 2008 IOP Publishing and SISSA |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2008_JCAP_V6_p22.pdf | 413.77 kB | Adobe PDF | View/Open |
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