Parametric studies of cosmic ray acceleration in supernova remnants

TL;DR

This paper develops a library of numerical models to study cosmic-ray acceleration in supernova remnants, analyzing energy distributions and shock acceleration timescales across various conditions to better understand their properties.

Contribution

It introduces a comprehensive library of models for SNR evolution, enabling mapping of remnants to constrain ambient medium properties and acceleration efficiency.

Findings

Derived ambient medium density and magnetic field strength for specific remnants.

Estimated cosmic-ray acceleration efficiency for different SNRs.

Refined ages of certain supernova remnants.

Abstract

We present a library of numerical models of cosmic-ray accelerating supernova remnants (SNRs) evolving through a homogeneous ambient medium. We analyse distributions of the different energy components and diffusive shock acceleration time-scales for the models in various conditions. The library comprises a variety of SNR evolutionary scenarios and is used to map remnants with sufficiently known properties. This mapping constrains the respective ambient medium properties and the acceleration efficiency. Employing the library, we derive the ambient medium density, ambient magnetic field strength and the cosmic-ray acceleration efficiency for models of Tycho and SN 1006 remnants and refine the ages of SNR 0509-67.5 and SNR 0519-69.0.