Dissipation of Alfven waves in solar coronal arches

Details Dissipation of Alfven waves in solar coronal arches Dissipation of Alfven waves in solar coronal arches

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989plap.work...63s&link_type=abstract

In ESA, Proceedings of an International School and Workshop on Plasma Astrophysics, Volume 1 p 63-67(SEE N89-24910 18-75)

Astronomy and Astrophysics

Astrophysics

Magnetohydrodynamic Waves, Solar Corona, Wave Dispersion, Wave Interaction, Energy Transfer, Plasma-Electromagnetic Interaction, Solar Magnetic Field, Wave Packets, Wave Propagation

Scientific paper

The physical mechanism by which mechanical energy is delivered to and absorbed by the solar corona is discussed. A set of MHD equations for analyzing the slow evolution of the magnetic field and the fast time of Alfven waves is presented. Alfven wave dissipation is treated. It is shown that the slow motion of the feet of coronal arches leads to irregular magnetic fields and that Alfven waves propagating in the irregular magnetic structure are dissipated through filamentation of the wave packet that generates short scales necessary for efficient dissipation.

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