Nonresonant resistive dissipation of compressible magnetohydrodynamic waves

Details Nonresonant resistive dissipation of compressible magnetohydrodynamic waves Nonresonant resistive dissipation of compressible magnetohydrodynamic waves

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...390..560c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 390, no. 2, May 10, 1992, p. 560-566.

Astronomy and Astrophysics

Astrophysics

17

Compressibility, Magnetohydrodynamic Waves, Wave Attenuation, Wave Propagation, Analytic Functions, Magnetosonic Resonance, Mathematical Models, Propagation Modes, Shear

Scientific paper

The effect of compressibility on the propagation and resistive dissipation properties of magnetohydrodynamic waves in nonuniform media is studied by using a normal mode analysis. The paper concentrates on wave models for which the resistivity acts over the entire system, thus excluding localized resonant absorption. The wave modes in nonhomogeneous situations are identified in term of their familiar homogeneous counterparts and it is shown that only the shear Alfven and slow magnetosonic modes survive in the resistive regime. The most promising heating agents in the astrophysical context are shown to be the shear Alfven waves that behave almost incompressibly.

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