Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..344d&link_type=abstract
Astrophysical Journal, Part 1, vol. 248, Aug. 15, 1981, p. 344-351.
Astronomy and Astrophysics
Astrophysics
296
Cosmic Rays, Magnetohydrodynamics, Particle Acceleration, Particle Diffusion, Shock Wave Profiles, Asymptotic Methods, Energetic Particles, High Energy Interactions, Mathematical Models, Propagation Velocity, Upstream
Scientific paper
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.
Drury Luke O'C.
Voelk Heinrich J.
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