Diffusive shock acceleration by multiple shock fronts with differing properties
Abstract
The effect of diffusive shock acceleration on a distribution of particles is explored for multiple shocks, taking into account adiabatic expansion between the shocks. Specifically, the spectral index is calculated numerically for two cases: a sequence of identical shocks, and a sequence of pairs of shocks with alternating shock strength. How these two cases evolve to the asymptotic limit is examined, and it is shown that the evolution of the paired-shock case can be described by a sequence of identical shocks with shock strength equal to the mean of the two.
- Publication:
-
Publications of the Astronomical Society of Australia
- Pub Date:
- August 1994
- DOI:
- 10.1017/S1323358000019858
- Bibcode:
- 1994PASA...11..175P
- Keywords:
-
- Energy Spectra;
- Galactic Cosmic Rays;
- Particle Acceleration;
- Particle Diffusion;
- Shock Fronts;
- Shock Waves;
- Asymptotic Methods;
- Interstellar Matter;
- Spectral Energy Distribution;
- Synchrotron Radiation;
- Wave Propagation;
- Solar Physics