Diffusion and drift of cosmic rays in highly turbulent magnetic fields

Details Diffusion and drift of cosmic rays in highly turbulent magnetic fields Diffusion and drift of cosmic rays in highly turbulent magnetic fields

2004-08-03

arxiv.org/abs/astro-ph/0408054v1

JCAP 0410 (2004) 007

Astronomy and Astrophysics

Astrophysics

17 pages, 7 figures

Scientific paper

10.1088/1475-7516/2004/10/007

We determine numerically the parallel, perpendicular, and antisymmetric diffusion coefficients for charged particles propagating in highly turbulent magnetic fields, by means of extensive Monte Carlo simulations. We propose simple expressions, given in terms of a small set of fitting parameters, to account for the diffusion coefficients as functions of magnetic rigidity and turbulence level, and corresponding to different kinds of turbulence spectra. The results obtained satisfy scaling relations, which make them useful for describing the cosmic ray origin and transport in a variety of different astrophysical environments.

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