The scattering of Alfven waves by density fluctuations

Details The scattering of Alfven waves by density fluctuations The scattering of Alfven waves by density fluctuations

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322..248l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 1, 1987, p. 248-255. Research supported by CUSPEA Program.

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8

Density Distribution, Magnetohydrodynamic Waves, Periodic Variations, Solar Corona, Wave Scattering, Computational Astrophysics, Energy Dissipation, Interstellar Space, Plasma Heating, Wave Interaction

Scientific paper

The authors consider the propagation of an Alfvén wave packet through a medium containing time-dependent random density fluctuations. The Alfvén wave interaction with these density irregularities causes the transfer of wave power to both shear (Alfvénic) and compressive (magnetosonic) disturbances. The latter are dissipated and heat the plasma. The authors compute the Alfvén wave decay rate in the limit of short-wavelength density fluctuations and apply the results to the solar corona and interstellar medium.

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