Hydrodynamical acceleration of particles in supernovae and extragalactic radio sources
Abstract
The acceleration of cosmic particles to relativistic energies as the result of the propagation of relativistic, hydrodynamical shocks is reviewed. The supernovashock model of Colgate and Johnson for acceleration of cosmicray nuclei is described and assessed, with emphasis on the underlying hydrodynamics. We review the evidence for relativistic blast waves in compact radio sources and describe the models which have been calculated. We point out that these models lead naturally to a consideration of nonspherical relativistic blast waves which are both accelerated and focused by the ambient gas distribution. We then describe recent work which extends the spherically symmetric, ultrarelativistic solutions which have been found to cases involving arbitrarily relativistic shocks in an axisymmetric density profile. Lastly, we discuss the development of an Eulerian numerical scheme for specialrelativistic hydrodynamics.
 Publication:

Particle Acceleration Mechanisms in Astrophysics
 Pub Date:
 November 1979
 DOI:
 10.1063/1.32089
 Bibcode:
 1979AIPC...56..295S
 Keywords:

 Cosmic Rays;
 Extragalactic Radio Sources;
 Magnetohydrodynamic Waves;
 Particle Acceleration;
 Shock Wave Interaction;
 Supernovae;
 Astronomical Models;
 Flow Velocity;
 Gas Dynamics;
 Relativistic Particles;
 Shock Wave Propagation;
 Two Dimensional Flow;
 Space Radiation;
 97.60.Bw;
 98.70.Dk;
 95.30.Cq;
 95.30.Lz;
 Supernovae;
 Radio sources;
 Elementary particle processes;
 Hydrodynamics