On the propagation of compressive waves in a radiating magnetized fluid

Details On the propagation of compressive waves in a radiating magnetized fluid On the propagation of compressive waves in a radiating magnetized fluid

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339..579b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 579-590.

Astronomy and Astrophysics

Astrophysics

19

Compression Waves, Magnetoacoustic Waves, Radiative Transfer, Solar Magnetic Field, Solar Oscillations, Wave Propagation, Eddington Approximation, Radiation Distribution, Sunspots, Thermodynamic Equilibrium

Scientific paper

Using the Mihalas and Mihalas (1983) treatment of the radiation field, the dispersion relation for linear compressive plane waves in a homogeneous, unstratified, uniformly magnetized, radiating fluid has been obtained. In the opticallly thick limit, the present relation is shown to predict two weakly damped anisotropic radiation-modified magnetoacoustic modes and a strongly damped radiation-diffusion mode. The theory has been applied to the example of the interaction of the solar acoustic oscillations with discrete photospheric magnetic structures such as sunspots, pores, and knots.

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