Recent Progress in Describing Cosmic Ray Transport

Details Recent Progress in Describing Cosmic Ray Transport Recent Progress in Describing Cosmic Ray Transport

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008mgm..conf.1036t&link_type=abstract

"THE ELEVENTH MARCEL GROSSMANN MEETING On Recent Developments in Theoretical and Experimental General Relativity, Gravitation an

Computer Science

Cosmic Rays, Turbulence, Diffusion, Transport

Scientific paper

The standard theory for the description of cosmic ray transport is the quasi-linear theory. Whereas it was assumed for a long time that QLT is a reliable and useful tool to describe transport of charged particles, recent test-particle simulations have demonstrated that for certain parameter regimes a linear description is not appropriate. In this talk a rigorous comparison between QLT and previous test-particle simulations will be presented. It is demonstrated that QLT is invalid for parallel and perpendicular transport for the most parameter regimes in magnetostatic as well as plasma wave turbulence. It is also demonstrated that recent nonlinear theories like the NLGC theory are able to reproduce at least some of the simulations.

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