Statistics – Computation
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aipc..264..173b&link_type=abstract
In: Particle acceleration in cosmic plasmas; Proceedings of the Workshop, Bartol Research Inst., Newark, DE, Dec. 4-6, 1991 (A93
Statistics
Computation
Cosmic Rays, Nonrelativistic Mechanics, Particle Acceleration, Shock Wave Interaction, Two Fluid Models, Computational Astrophysics, Particle Diffusion
Scientific paper
In two-fluid analytical approaches to the modelling of particle acceleration in cosmic-ray modified shocks, the shock structure and the acceleration efficiency can be found as a function of the shock Mach number for a given shock velocity, from purely hydrodynamic considerations. Heretofore, two-fluid models have usually included no information about the possibility of particle escape from the shock region. Such escape from the environs of a non-relativistic shock creates small but significant anisotropies in the particle distribution. This paper addresses this deficiency in part by including particle anisotropies in a hydrodynamic determination of the shock structure. Modified shocks are examined here, and anisotropies consistent with the diffusion approximation are found to substantially alter the acceleration efficiency predictions of two-fluid models.
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