Cosmic ray acceleration at oblique shocks
High Energy Astrophysical Phenomena
2015-05-30 v1
Abstract
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.
Cite
@article{arxiv.1108.0582,
title = {Cosmic ray acceleration at oblique shocks},
author = {A. R. Bell and K. M. Schure and B. Reville},
journal= {arXiv preprint arXiv:1108.0582},
year = {2015}
}
Comments
11 pages, 4 figures, 1 table. Accepted for publication in Monthly Notices of the Royal Astronomical Society