Influence of electron beam pulses on H$\\alpha$ line formation

Jana Kasparova

Michal Varady, Marian Karlicky, Petr Heinzel

The time evolution of the solar atmosphere affected by precipitation of electron beam pulses is modelled. Beam propagation is calculated in the frame of a test particle approach, effects of Coulomb collisions and return current losses are considered. The heating of the atmosphere corresponding to the beam energy losses enters a 1-D hydrodynamic code and drives the time evolution of the atmosphere. H$\\alpha$ line profiles are calculculated by a time dependent radiative transfer code in the MALI formalism. Effects of return current, non-thermal collisional rates, and thermal structure of the atmosphere on the line formation are discussed.