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Title:
Hydromagnetic shock structure in the presence of cosmic rays
Authors:
Drury, L. O'C.; Voelk, J. H.
Affiliation:
AA(Max-Planck-Institut für Kernphysik, Heidelberg, Germany), AB(Max-Planck-Institut für Kernphysik, Heidelberg, Germany)
Publication:
Astrophysical Journal, Part 1, vol. 248, Aug. 15, 1981, p. 344-351. (ApJ Homepage)
Publication Date:
08/1981
Category:
Space Radiation
Origin:
STI
NASA/STI Keywords:
Cosmic Rays, Magnetohydrodynamics, Particle Acceleration, Particle Diffusion, Shock Wave Profiles, Asymptotic Methods, Energetic Particles, High Energy Interactions, Mathematical Models, Propagation Velocity, Upstream
DOI:
10.1086/159159
Bibliographic Code:
1981ApJ...248..344D

Abstract

The time asymptotic structure of a shock significantly modified by the back-reaction from the diffusive acceleration of cosmic rays is investigated. Making a physically plausible assumption about the diffusion, it is shown that for given upstream conditions and shock speed only a finite odd number of shock structures are possible; an explicit method of determining these is given (in many cases the solution is unique). The results of this nonlinear study are contrasted with those of the linear test-particle theory and shown to confirm the possibility of efficient particle acceleration in shocks.

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Database: Astronomy
Physics
arXiv e-prints