A Selfconsistent Shock Solution for RadiationDominated Flows
Abstract
The structure of a onedimensional planeparallel shock in a radiationdominated hot plasma flow is investigated numerically. Compton scattering with the electrons is assumed to be the dominant energy exchange mechanism between the plasma and the radiation. A selfconsistent solution is obtained for the photon spectrum, the velocity, and the temperature profile in the shock. Two types of shock structures are found, depending on the initial conditions: those where deviations from a local equilibrium spectrum are small with a temperature function increasing monotonically through the shock, and those where close to the shock center the spectrum shows a strongly nonequilibrium behavior and the temperature assumes a maximum before it decreases to its final adiabatic value. This general shock structure depends on the ratio of two length scales, namely the typical shock width and a thermalization length which describes the relaxation toward the postshock equilbrium; an analytic estimate of this length scale is given.
 Publication:

The Astrophysical Journal
 Pub Date:
 April 1988
 DOI:
 10.1086/166234
 Bibcode:
 1988ApJ...327..760R
 Keywords:

 Compton Effect;
 High Temperature Plasmas;
 Magnetohydrodynamic Flow;
 Plasma Radiation;
 Shock Fronts;
 Shock Waves;
 Computational Astrophysics;
 Galactic Nuclei;
 High Frequencies;
 Neutron Stars;
 Temperature Dependence;
 Astrophysics;
 HYDRODYNAMICS;
 SHOCK WAVES;
 XRAYS: GENERAL