Magnetoacoustic surface gravity waves

Details Magnetoacoustic surface gravity waves Magnetoacoustic surface gravity waves

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..134..211g&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 134, Aug. 1991, p. 211-232. Research supported by Organization of American States, CONICET,

Physics

7

Gravity Waves, Magnetoacoustic Waves, Plasma Waves, Compressibility, Magnetic Fields, Perturbation Theory, Solar Wind

Scientific paper

The effect of gravity on the surface magnetoacoustic waves may be important when considering applications to solar and laboratory plasmas. The linear magnetoacoustic waves, which may appear in a configuration with an interface between two plasmas or a plasma and an ordinary gas, are studied. Compressibility and gravity are taken into account. The different types of couplings between internal and surface modes are analyzed. Magnetoacoustic surface waves are studied in detail in a configuration consisting of an interface between an isothermal plasma and an ordinary gas. The possible regions where these modes may exist are discussed. A general way of grouping and classifying the complicated spectra of modes is presented. New groups of modes appear as a consequence of gravity and stratification, in addition to those already present in the absence of gravity. The results may be of help in studying more complicated cases.

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