Journal Article

First-order <i>Fermi</i> acceleration driven by magnetic reconnection

L. O’C. Drury

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 422, issue 3, pages 2474-2476
Published in print May 2012 | ISSN: 0035-8711
Published online May 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.20804.x
First-order Fermi acceleration driven by magnetic reconnection

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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.

Keywords: acceleration of particles; magnetic reconnection

Journal Article.  1729 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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