The Proton Distribution Function in Weakly Magnetized Turbulent Plasmas
Andrei Gruzinov, Eliot Quataert
Abstract
We calculate the proton distribution function due to heating by subsonic (Alfvenic) turbulence in a weakly magnetized collisionless plasma. The distribution function is nonthermal. For non-relativistic energies, it is an exponential of the magnitude of the proton velocity. For ultra-relativistic energies, it can be characterized as a power law with a momentum-dependent slope.
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