Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....4.2353e&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
Scientific paper
supernova remnants (SNR) appear to hold out the possibility of explaining the origin of cosmic rays, up to the `knee' in the energy spectrum at least. However, it has been claimed that the non-observation of many SNR in high energy gamma rays makes the mechanism unlikely (e.g. [13, 14, 18]). Here, we make an examination of this problem, with particular reference to the question of the density of gas into which SNR expand and to the problem of the visibility of SNR gamma ray sources. We conclude that the lack of (some) gamma ray sources does not preclude most cosmic rays from originating in SNR.
Erlykin Anatoly D.
Wolfendale Arnold W.
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