Non-linear model of particle acceleration at colliding shock flows
Abstract
Powerful stellar winds and supernova explosions with intense energy release in the form of strong shock waves can convert a sizeable part of the kinetic energy release into energetic particles. The starforming regions are argued as a favorable site of energetic particle acceleration and could be efficient sources of nonthermal emission. We present here a non-linear time-dependent model of particle acceleration in the vicinity of two closely approaching fast magnetohydrodynamic (MHD) shocks. Such MHD flows are expected to occur in rich young stellar cluster where a supernova is exploding in the vicinity of a strong stellar wind of a nearby massive star. We find that the spectrum of the high energy particles accelerated at the stage of two closely approaching shocks can be harder than that formed at a forward shock of an isolated supernova remnant. The presented method can be applied to model particle acceleration in a variety of systems with colliding MHD flows.
Keywords
Cite
@article{arxiv.1212.1556,
title = {Non-linear model of particle acceleration at colliding shock flows},
author = {A. M. Bykov and P. E. Gladilin and S. M. Osipov},
journal= {arXiv preprint arXiv:1212.1556},
year = {2015}
}
Comments
9 pages, 5 figures, MNRAS in press