Cosmic ray streaming. I - Effect of Alfven waves on particles

Astronomy and Astrophysics – Astronomy

Scientific paper

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Convective Flow, Cosmic Rays, Energy Dissipation, Magnetohydrodynamic Waves, Particle Interactions, Free Flow, Particle Acceleration, Particle Energy, Propagation Velocity

Scientific paper

The motion of cosmic rays through a moving magnetized medium supporting a spectrum of hydromagnetic waves is reexamined. In different approximations, Fermi acceleration, convective motion through space, diffusive motion, and free streaming are recovered. It is shown that Fermi acceleration can greatly modify the adiabatic energy losses which have conventionally been thought to accompany convective motion of cosmic rays. This may have implications for 'self-confinement' theories of cosmic ray propagation.

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