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Heating the Solar Atmosphere by the Self-Enhanced Thermal Waves Caused
by the Dynamo Processes
release_smhbxk3hobbrjmy5kqkje43r3i
by
Yurii V. Dumin (Institute of Terrestrial Magnetism,
Ionosphere,
and
Radio Wave Propagation,
Russian Academy of Sciences,
Troitsk,
Moscow reg.,
Russia)
Released
as a article
.
2012
Abstract
We discuss a possible mechanism for heating the solar atmosphere by the
ensemble of thermal waves, generated by the photospheric dynamo and propagating
upwards with increasing magnitudes. These waves are self-sustained and
amplified due to the specific dependence of the efficiency of heat release by
Ohmic dissipation on the ratio of the collisional to gyro- frequencies, which
in its turn is determined by the temperature profile formed in the wave. In the
case of sufficiently strong driving, such a mechanism can increase the plasma
temperature by a few times, i.e. it may be responsible for heating the
chromosphere and the base of the transition region.
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1201.4990v1
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