Freiburg 2008 – wissenschaftliches Programm
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EP: Fachverband Extraterrestrische Physik
EP 4: The Sun and Heliosphere - Poster Session
EP 4.18: Poster
Montag, 3. März 2008, 17:30–19:00, Vorraum KGI-Aula
Numerical simulations of the energetic particles accelerated by reconnection electric field — •Jingnan Guo1,2, Jörg Büchner1, Eckart Marsch1, Pengfei Chen3, Cheng Fang3, and Weiqun Gan2 — 1Max Planck Institute for Solar System Research — 2Purple Mountain Observatory, Chinese Academy of Sciences — 3Nanjing University, China
Particle acceleration by direct current electric field in a reconnecting current sheet is considered as one of the popular mechanisms of generation of energetic particles during solar flares. We investigate the energy spectra using test particle approach in the framework of 2.5-dimensional magnetohydrodynamical numerical simulations of magnetic reconnection. The result indicates that both electrons and protons escaping from the acceleration region have a power-law spectrum and that those most energetic particles are accelerated from area nearest to the X-point. The influences of the electromagnetic configuration and plasma parameters on the final energy spectrum and the comparison between proton acceleration and electron acceleration are also studied.