Electron acceleration by random DC electric fields, Astophys. Journal, 489, 367 (1997)


We present a global model for the acceleration of electrons in the framework of the statistical flare model (Vlahos et al. 1995). In this model, solar flares are the result of an internal Self-Organised Critical (SOC) process in a complex and evolving active region. The acceleration of electrons is due to localised DC electric fields which are closely related with the energy release process in the active region. Our numerical results regarding the kinetic energy distribution of the accelerated electrons, show a power-law or an exponential-law behaviour depending upon the maximum trapping time of the energetic particles inside the acceleration volume.

keywords : Sun: flares -- Sun: particle acceleration