Cosmic ray acceleration at oblique shocks

Details Cosmic ray acceleration at oblique shocks Cosmic ray acceleration at oblique shocks

2011-08-02

arxiv.org/abs/1108.0582v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

11 pages, 4 figures, 1 table. Accepted for publication in Monthly Notices of the Royal Astronomical Society

Scientific paper

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.

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