Journal Article

Cosmic ray acceleration at oblique shocks

A. R. Bell, K. M. Schure and B. Reville

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 418, issue 2, pages 1208-1216
Published in print December 2011 | ISSN: 0035-8711
Published online November 2011 | e-ISSN: 1365-2966 | DOI:
Cosmic ray acceleration at oblique shocks

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We show that the diffusion approximation breaks down for particle acceleration at oblique shocks with velocities typical of young supernova remnants. Higher order anisotropies flatten the spectral index at quasi-parallel shocks and steepen the spectral index at quasi-perpendicular shocks. We compare the theory with observed spectral indices.

Keywords: acceleration of particles; shock waves; cosmic rays; ISM: supernova remnants

Journal Article.  7264 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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