Particle acceleration in modified oblique nonrelativistic shocks
Abstract
Nonlinear MonteCarlo simulations of particle acceleration at astrophysical shocks have been restricted to the specialized case of planeparallel shocks, while MonteCarlo work with oblique geometries has to date been confined to testparticle models. The MonteCarlo approach has significant advantages over hybrid plasma simulations in that it can determine particle spectra and acceleration efficiencies over extremely wide energy ranges with modest computing resources. Previous applications of the MonteCarlo technique at the quasiparallel earth bow shock led to very successful modeling of proton and heavy ion spectra, as well as other observed quantities (e.g., Ellison et al. 1990). This has motivated the extension of this technique to oblique shock geometries typical of those found in most astrophysical shock environments. In addition, such a generalization will permit the thorough examination of theoretical predictions of rapid acceleration times at quasiperpendicular shocks. Therefore, we have embarked on the modification of our existing MonteCarlo code, and in this paper outline the major technical aspects involved in developing a simulation of cosmicray acceleration at modified, oblique, nonrelativistic shocks.
 Publication:

Particle Acceleration in Cosmic Plasmas
 Pub Date:
 August 1992
 DOI:
 10.1063/1.42725
 Bibcode:
 1992AIPC..264..177B
 Keywords:

 Cosmic Plasma;
 Nonrelativistic Mechanics;
 Oblique Shock Waves;
 Particle Acceleration;
 Shock Wave Interaction;
 Energetic Particles;
 Monte Carlo Method;
 Space Radiation;
 96.50.Fm;
 96.40.Cd;
 47.40.Nm;
 02.50.Ng;
 Planetary bow shocks;
 interplanetary shocks;
 Shock wave interactions and shock effects;
 Distribution theory and Monte Carlo studies