Time Evolution of Cosmic Ray MHD Shocks and Their Emissions

TL;DR

This paper models the time evolution of cosmic ray MHD shocks, incorporating cosmic ray acceleration, wave effects, and emission predictions, providing insights into shock dynamics and associated astrophysical signals.

Contribution

It introduces a self-consistent simulation framework for cosmic ray MHD shocks that includes wave propagation, dissipation, and emission calculations, advancing understanding of shock physics.

Findings

Simulated shock evolution with cosmic ray backreaction.

Predicted leptonic and hadronic emission spectra.

Insights into cosmic ray acceleration mechanisms.

Abstract

We present results of time evolution of oblique MHD plane shocks including diffusive cosmic ray acceleration with backreaction on the plasma flows. The simulations include self-consistent effects of finite Alfven wave propagation and dissipation. From the computed cosmic ray particle phase space distributions we calculate expected leptonic and hadronic emissions resulting from interactions between the cosmic rays, magnetic fields, the thermal particle population and relevant astrophysical photon fields.