Cosmic ray acceleration in supernova blast waves

Details Cosmic ray acceleration in supernova blast waves Cosmic ray acceleration in supernova blast waves

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...125..204m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 125, no. 2, Sept. 1983, p. 204-216. Research supported by the South African Co

Astronomy and Astrophysics

Astrophysics

45

Astronomical Models, Cosmic Rays, Particle Acceleration, Shock Wave Propagation, Supernovae, Adiabatic Conditions, Antiprotons, Cooling

Scientific paper

Cosmic ray spectra produced over the lifetime of an evolving SNR blast wave are determined by solving the test particle approximation of diffusive shock acceleration in plane, steady shocks with homogeneous upstream and downstream media. The injection of 500-eV particles at the shock produces power laws up to at least 3 trillion eV. These power law spectra are at least as hard as the source spectra used in Leaky Box propagation calculations, as has been independently found by Bogdan and Voelk (1983). The correspondence of the present model to the reacceleration model of Blandford and Ostriker (1980) is shown, and it is demonstrated that the cooling effect in these models' expanding remnants may be sufficient to explain the overabundance of cosmic ray antiprotons in the 0.1-10 GeV kinetic energy range.

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