Timedependent Evolution of CosmicRaymediated Shocks in the TwoFluid Model
Abstract
Extensive numerical simulations of cosmicraymediated shocks have been carried out in the twofluid model, examining the timedependent evolution of the shocks in planeparallel and spherical symmetric geometries. The plane shocks eventually reach equilibrium states in a time controlled by the development of the shock precursor. The time is typically two orders of magnitude greater than the cosmicray diffusion time, and depends on the degree of shock restructuring required to attain equilibrium. Spherical shocks are not found to reach equilibrium. It is found that supernova shocks can transfer about 10 percent of their blast energy through diffusive processes into cosmic rays at the end of the adiabatic SedovTaylor phase.
 Publication:

The Astrophysical Journal
 Pub Date:
 November 1990
 DOI:
 10.1086/169361
 Bibcode:
 1990ApJ...363..499J
 Keywords:

 Computational Astrophysics;
 Cosmic Rays;
 Shock Waves;
 Two Fluid Models;
 Astronomical Models;
 Evolution (Development);
 Particle Acceleration;
 Time Dependence;
 Astrophysics;
 COSMIC RAYS: GENERAL;
 PARTICLE ACCELERATION;
 SHOCK WAVES