Can Gamma Ray Astronomy Disprove the Hypothesis That Cosmic Rays Originate in Supernova Remnants?

Details Can Gamma Ray Astronomy Disprove the Hypothesis That Cosmic Rays Originate in Supernova Remnants? Can Gamma Ray Astronomy Disprove the Hypothesis That Cosmic Rays Originate in Supernova Remnants?

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.

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