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Recent Advances in Understanding Particle Acceleration Processes in Solar Flares View all abstracts by submitter

Amir Caspi   Submitted: 2011-10-28 12:22

We review basic theoretical concepts in particle acceleration, withparticular emphasis on processes likely to occur in regions of magneticreconnection. Several new developments are discussed, including detailedstudies of reconnection in three-dimensional magnetic field configurations(e.g., current sheets, collapsing traps, separatrix regions) and stochasticacceleration in a turbulent environment. Fluid, test-particle, andparticle-in-cell approaches are used and results compared. While these studiesshow considerable promise in accounting for the various observationalmanifestations of solar flares, they are limited by a number of factors, mostlyrelating to available computational power. Not the least of these issues is theneed to explicitly incorporate the electrodynamic feedback of the acceleratedparticles themselves on the environment in which they are accelerated. A briefprognosis for future advancement is offered.

Authors: Valentina V. Zharkova, Karpar Arzner, Arnold O. Benz, Philippa Browning, Cyril Dauphin, A. Gordon Emslie, Lyndsay Fletcher, Eduard P. Kontar, Gottfried Mann, Marco Onofri, Vahé Petrosian, Rim Turkmani, Nicole Vilmer, Loukas Vlahos
Projects: GONG,Hinode/EIS,Hinode/SOT,Hinode/XRT,Nobeyama Radioheliograph,Owens Valley Solar Array,RHESSI,SDO-AIA,SDO-HMI,SDO-EVE,SoHO-EIT,SoHO-MDI,SoHO-CDS,SoHO-LASCO,SoHO-SUMER,STEREO,TRACE

Publication Status: Published -- Zharkova, V. V., et al. 2011, Space Sci. Rev., 159, 357; DOI 10.1007/s11214-011-9803-y
Last Modified: 2011-11-17 14:20
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