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Bohm Diffusion and Cosmic-Ray-Modified Shocks

Published online by Cambridge University Press:  12 April 2016

Peter Duffy
Peter Duffy*
Affiliation:
Max-Planck-Institut für Kernphysik, Heidelberg 10 39 80, Germany

Abstract

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A numerical solution to the problem of self-consistent diffusive shock acceleration is presented. The cosmic rays are scattered, accelerated and exert a back-reaction on the gas through their interaction with turbulence frozen into the local fluid frame. Using a grid with a hierarchical spacetime structure the physically interesting limit of Bohm diffusion (к ∝ pv), which introduces a wide range of diffusion lengthscales and acceleration timescales, can be studied. Some implications for modified shocks and particle acceleration are presented.

Subject headings: acceleration of particles — cosmic rays — diffusion — shock waves

Type
Poster Papers
Information
International Astronomical Union Colloquium , Volume 142: Particle Acceleration Phenomena in Astrophysical Plasmas , 1994 , pp. 981 - 983
Copyright
Copyright © The American Astronomical Society 1994

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