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Gamma-ray observations of supernova remnants

Published online by Cambridge University Press:  29 January 2014

Marianne Lemoine-Goumard
Marianne Lemoine-Goumard*
Affiliation:
Centre d'Études Nucléaires de Bordeaux Gradignan Université Bordeaux 1, CNRS/IN2P3 33175 Gradignan, France E-mail: [email protected]
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Abstract

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In the past few years, gamma-ray astronomy has entered a golden age. At TeV energies, only a handful of sources were known a decade ago, but the current generation of ground-based imaging atmospheric Cherenkov telescopes has increased this number to more than one hundred. At GeV energies, the Fermi Gamma-ray Space Telescope has increased the number of known sources by nearly an order of magnitude in its first 2 years of operation. The recent detection and unprecedented morphological studies of gamma-ray emission from shell-type supernova remnants is of great interest, as these analyses are directly linked to the long standing issue of the origin of the cosmic-rays. However, these detections still do not constitute a conclusive proof that supernova remnants accelerate the bulk of Galactic cosmic-rays, mainly due to the difficulty of disentangling the hadronic and leptonic contributions to the observed gamma-ray emission. In the following, I will review the most relevant results of gamma ray astronomy concerning supernova remnants (shell-type and middle-age interacting with molecular clouds).

Keywords

cosmic-rayssupernova remnantsgamma-rays
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S296: Supernova Environmental Impacts , January 2013 , pp. 287 - 294
Copyright
Copyright © International Astronomical Union 2014 

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