Heating processes of the solar corona

Details Heating processes of the solar corona Heating processes of the solar corona

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981plap.rept..113k&link_type=abstract

In ESA Plasma Astrophys. p 113-128 (SEE N82-20030 10-88)

Astronomy and Astrophysics

Astrophysics

Electrodynamics, Magnetohydrodynamic Shear Heating, Solar Corona, Acoustics, Chromosphere, Energy Dissipation, Energy Transfer, Heating, Joule-Thomson Effect, Magnetohydrodynamic Waves, Shock Waves, Solar Magnetic Field, Thermalization (Energy Absorption), Thermodynamics

Scientific paper

Coronal heating processes are discussed in the context of the magnetic structure of the solar corona. Existing theories are divided into acoustic theories, where the magnetic field plays a passive role, and electrodynamic theories where the magnetic field plays an active role in the sense that transversal waves are possible. The dissipation mechanisms are shock wave dissipation in the acoustic theory and viscous and Joule dissipation of Alfven waves in the electrodynamic theory. The dissipation of Alfven waves appears to be much more effective in a structured medium than in a homogeneous medium. Anomalous Joule heating is likely to be important as a steady heating mechanism.

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