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Abstract: We study diffusion of Cosmic Rays CRs in turbulent magnetic fields usingtest particle simulations. Electromagnetic fields are produced in directnumerical MHD simulations of turbulence and used as an input for particletracing, particle feedback on turbulence being ignored. Statistical transportcoefficients from the test particle runs are compared with earlier analyticalpredictions. We find qualitative correspondence between them in various aspectsof CR diffusion. In the incompressible case, that we consider in this paper,the dominant scattering mechanism occurs to be the non-resonant mirrorinteractions with the slow-mode perturbations. Perpendicular transport roughlyagrees with being produced by magnetic field wandering.



Author: A. Beresnyak, H. Yan, A. Lazarian

Source: https://arxiv.org/







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