Dissipation of Alfv\’en wave through ion-neutral interactions
Latest Trends In Observing And Understanding The Dynamics Of The Solar Atmosphere: From MHD Waves To Small-Scale Transients
Date Submitted
2017-04-14 11:14:17
Damien Przybylski
Max-Planck-Institut für Sonnensystemforschung
Sergiy Shelyag (Northumbria University), Elena Khomenko (IAC), Paul Cally (Monash University)
We investigate the ability of ion-neutral interactions to dissipate Alfv\'en waves in the solar chromosphere. An acoustic driver is used to generate perturbations in a self-similar magnetohydrostatic flux tube model. As these waves travel into the centre of the magnetic field concentration, where plasma $\beta dissipate a significant amount of energy, a factor of 20 higher than the dissipation of static currents. This heating is caused by the damping of magnetic waves, as seen by a decrease in Poynting flux by up to $90\%$ when ambipolar diffusion is included. The dependence of this energy dissipation with resolution, driver amplitude and frequency is studied.
Schedule
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09:00 - 10:30
09:00
Abstract
Dissipation of Alfv\’en wave through ion-neutral interactions