Propagation of hydrodynamic waves in optically thin plasmas

Details Propagation of hydrodynamic waves in optically thin plasmas Propagation of hydrodynamic waves in optically thin plasmas

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...415..335i&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 415, no. 1, p. 335-341.

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Magnetoacoustic Waves, Magnetohydrodynamic Waves, Optical Thickness, Plasma Conductivity, Solar Atmosphere, Wave Propagation, Landau Damping, Propagation Modes, Thermal Conductivity

Scientific paper

The propagation of thermal and magnetosonic linear waves in a general optically thin plasma is studied. In particular, the plasma with solar abundances in the temperature range 10 exp 4-10 exp 8 K is analyzed. The above plasma is assumed to be cooled by the corresponding standard cooling function, and five different kinds of heating mechanisms are considered. The phase velocity and the scale length for damping (or amplification) of the thermal and magnetosonic wave modes are obtained, and an explicit analytical condition for magnetosonic wave amplification is found. Applications to the different regions of the solar atmosphere are outlined.

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