Electron Acceleration by Random DC Electric Fields
Abstract
We present a global model for the acceleration of electrons in the framework of the
Statistical Flare Model of Vlahos et al. In this model, solar flares are the result
of an internal Self-Organized Critical (SOC) process in a complex, evolving and
highly inhomogeneous active region. The acceleration of electrons is due to localized
DC electric fields closely related to the energy-release process in the active
region. Our numerical results for the kinetic energy distribution of accelerated
electrons show a power-law or an exponential-law behavior, depending on the maximum
trapping time of the energetic particles inside the acceleration volume.
Subject Headings: acceleration of particles - Sun:flares
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