Particle Acceleration in a Three-Dimensional Model of Reconnecting Coronal Magnetic Fields |
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Authors: | Peter J Cargill Loukas Vlahos Rim Turkmani Klaus Galsgaard Heinz Isliker |
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Institution: | (1) Space and Atmospheric Physics, The Blackett Laboratory, Imperial College, London, SW7 2BW, UK;(2) Department of Physics, University of Thessaloniki, 54124 Thessaloniki, Greece;(3) Niels Bohr Institute, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark |
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Abstract: | Particle acceleration in large-scale turbulent coronal magnetic fields is considered. Using test particle calculations, it
is shown that both cellular automata and three dimensional MHD models lead to the production of relativistic particles on
sub-second timescales with power law distribution functions. In distinction with the monolithic current sheet models for solar
flares, particles gain energy by multiple interactions with many current sheets. Difficulties that need to be addressed, such
as feedback between particle acceleration and MHD, are discussed. |
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Keywords: | particle acceleration solar flares |
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