Cosmic Ray Acceleration by Supernova Shocks

TL;DR

This paper demonstrates that nonlinear kinetic theory effectively explains nonthermal emissions from supernova remnants, providing strong evidence for efficient cosmic ray acceleration and magnetic field amplification that align with the observed Galactic cosmic ray spectrum up to 10^17 eV.

Contribution

It shows that the nonlinear kinetic theory accurately models cosmic ray acceleration and magnetic field amplification in supernova remnants, supporting their role in Galactic cosmic ray production.

Findings

Theory fits observational data well.

Magnetic field amplification enhances cosmic ray maximum energy.

CR spectrum from SNRs matches Galactic CR spectrum up to 10^17 eV.

Abstract

We analyse the results of recent measurements of nonthermal emission from individual supernova remnants (SNRs) and their correspondence to the nonlinear kinetic theory of cosmic ray (CR) acceleration in SNRs. It is shown that the theory fits these data in a satisfactory way and provides the strong evidences for the efficient CR production in SNRs accompanied by significant magnetic field amplification. Magnetic field amplification leads to considerable increase of CR maximum energy so that the spectrum of CRs accelerated in SNRs is consistent with the requirements for the formation of Galactic CR spectrum up to the energy ~10^17 eV.