Numerical simulations of spicule driving mechanisms |
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Authors: | A S Andreev A G Kosovichev |
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Institution: | (1) Crimean Astrophysical Observatory, Nauchny, UKraine;(2) Institute of Astronomy, University of Cambridge, U.K. |
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Abstract: | Spicules are known as one of the most prevalent small-scale dynamic phenomena on the sun, which are likely to give considerable contribution to coronal heating and mass supply. We discuss a model of the spicules driven by a train of slow MHD shock waves propagating along a vertical expanding magnetic flux tube. The shocks are initiated due to compression of the tube by the increasing external pressure in the lower chromosphere. Downflow of spicular material depends on radiative cooling and other dissipative processes. |
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Keywords: | Sun: atmosphere Sun: corona |
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