First order Fermi acceleration driven by magnetic reconnection

Details First order Fermi acceleration driven by magnetic reconnection First order Fermi acceleration driven by magnetic reconnection

2012-01-31

arxiv.org/abs/1201.6612v2

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Accepted for MNRAS

Scientific paper

A box model is used to study first order Fermi acceleration driven by magnetic reconnection. It is shown, at least in this simple model, that the spectral index of the accelerated particles is related to the total compression in the same way as in diffusive shock acceleration and is not, as has been suggested, a universal $E^{-5/2}$ spectrum. The acceleration time-scale is estimated and some comments made about the applicability of the process.

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