SH043-0008
Large-scale Electron Acceleration by Magnetic Reconnection during Solar Flares

Tuesday, 15 December 2020
Poster
Fan Guo1, Xiaocan Li1, Hui Li2, Chengcai Shen3 and Bin Chen4, (1)Los Alamos National Laboratory, Los Alamos, NM, United States, (2)Los Alamos National Lab, Los Alamos, NM, United States, (3)Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, United States, (4)New Jersey Institute of Technology, Center for Solar-Terrestrial Research, Edison, NJ, United States
Abstract:
Particle acceleration by magnetic reconnection during solar flares is an important unsolved problem. A major difficulty for resolving this problem is to adequately describe particle acceleration and transport in and around the solar flare reconnection region. Built on results and analysis on plasma kinetic simulations, we developed a large-scale reconnection acceleration model by solving the energetic particle transport equations in a background reconnection flow provided by MHD simulations. Due to the compression and shear effects, particles are accelerated to high energies and develop power-law energy distributions. The power-law indices and maximum energy are consistent with solar flare observations. This model has great potential for explaining and predicting emission signatures from energetic electrons during solar flares, such as the hard X-ray and radio emissions observed during the September 10, 2017 event.
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