The effects of Alfven waves on heating plasma in post-flare loops

Details The effects of Alfven waves on heating plasma in post-flare loops The effects of Alfven waves on heating plasma in post-flare loops

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.187..291l&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 187, no. 2, Jan. 1992, p. 291-306.

Astronomy and Astrophysics

Astrophysics

1

Coronal Loops, Magnetohydrodynamic Waves, Plasma Heating, Solar Flares, Solar Magnetic Field, Electron Density (Concentration), Ion Density (Concentration), Magnetic Field Configurations, Magnetic Flux, Wave Propagation

Scientific paper

In investigating the effects of collision Alfven waves on the heating of a cool-type solar loop, like the post-flare loop, models are proposed, and the distributions of ion or electron density, temperature, pressure, and wave energy density are simulated. It is assumed that the magnetic field strength in the loop is about 100 G and found that Alfven waves can propagate through the whole loop, that is to say, the decay length of collision Alfven waves which are considered can reach to the height or length of the loop. Thus, the Alfven wave heating is a considerable heating mechanism in cool loops. It is also found that the variations of density, pressure, and wave energy density are more significant than those of the temperature. In the whole loop, the temperature is of the order of about 10,000 K. In comparison with other parameters, the temperature can be considered as homogeneous; hence, the heat conductive flux in the simulations is omitted.

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