Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...362..359m&link_type=abstract
Astronomy and Astrophysics, v.362, p.359-370 (2000)
Astronomy and Astrophysics
Astrophysics
Magnetohydrodynamics (Mhd), Sun: Magnetic Fields, Sun: Chromosphere, Sun: Corona, Waves
Scientific paper
The propagation of linear MHD surface waves in a compressible plasma with a discontinuous interface in the magnetic field and temperature is considered. The initial perturbation is applied only to a vorticity line, which is located on the RHS of the discontinuity. Two different surface waves exist in this model, one associated with the vorticity line and the other confined to the discontinuity. Time-dependent analytical solutions for the wave velocity perturbations are obtained for both surface waves by applying Laplace transforms. The solutions are used to investigate the effects caused by compressibility on the propagation of these waves. It is shown that the compressibility effects are most important in the vicinity of the vorticity line and at the magnetic interface, and that they affect differently the behavior of the surface waves.
Huang Pu
Musielak Zdzislaw E.
Ulmschneider Peter
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