Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003padeu..13..133j&link_type=abstract
In: Contributions to NATO Advanced Research Workshop Turbulence, Waves, and Instabilities in the Solar Plasma; Hungary, 16-20 Se
Astronomy and Astrophysics
Astronomy
Scientific paper
The possible generation of spicules by Alfvénic waves is studied in MHD where dissipation is mainly caused by ion-neutral collision damping, as suggested by tet{haerendel}. The propagation of high frequency Alfvén waves on vertically open solar magnetic flux tubes is considered by numerically solving a set of fully nonlinear, dissipative 1.5D MHD equations with the waves being generated by a continuous sinusoidal driver in the low atmosphere of the Sun. Spicule-like structures with heights of around 4,000-10,000 unit{km} were formed, primarily by the impact of a series of slow shocks generated by the continuous interaction between the upward propagating driven and reflected wave trains rather than the predicted ion-neutral damping mechanism.
Erdelyi Robert
James Steven P.
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