Please use this identifier to cite or link to this item:
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 (one of the alternative locations)
ISSN: 1475-7516 (Online)
Alternative Location:
Copyright: 2008 IOP Publishing and SISSA
Appears in Collections:Research Papers (A&A)

Files in This Item:
File Description SizeFormat 
2008_JCAP_V6_p22.pdf413.77 kBAdobe PDFView/Open

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.