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arxiv: 1201.4990 · v2 · pith:MVCSGCG4new · submitted 2012-01-24 · ⚛️ physics.plasm-ph · astro-ph.SR· physics.space-ph

Heating the Solar Atmosphere by the Self-Enhanced Thermal Waves Caused by the Dynamo Processes

classification ⚛️ physics.plasm-ph astro-ph.SRphysics.space-ph
keywords heatingwavesatmospheredynamomechanismsolartemperaturethermal
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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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