Cosmic ray acceleration and escape from supernova remnants
High Energy Astrophysical Phenomena
2015-06-12 v1
Abstract
Galactic cosmic ray (CR) acceleration to the knee in the spectrum at a few PeV is only possible if the magnetic field ahead of a supernova remnant (SNR) shock is strongly amplified by CR escaping the SNR. A model formulated in terms of the electric charge carried by escaping CR predicts the maximum CR energy and the energy spectrum of CR released into the surrounding medium. We find that historical SNR such as Cas A, Tycho and Kepler may be expanding too slowly to accelerate CR to the knee at the present time.
Keywords
Cite
@article{arxiv.1301.7264,
title = {Cosmic ray acceleration and escape from supernova remnants},
author = {AR Bell and KM Schure and B Reville and G Giacinti},
journal= {arXiv preprint arXiv:1301.7264},
year = {2015}
}
Comments
17 pages, 5 figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society