Physics
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..194w&link_type=abstract
Astrophysical Journal, Part 1, vol. 230, May 15, 1979, p. 194-203.
Physics
2
Magnetohydrodynamic Waves, Plasma Sheaths, Solar Physics, Standing Waves, Wave Propagation, Compressible Flow, Incompressible Flow, Plasma Density, Solar Atmosphere, Solar Magnetic Field, Systems Stability, Tubes, Velocity Distribution
Scientific paper
Hydromagnetic-wave propagation in a plane-parallel magnetic flux sheath embedded in a compressible plasma is studied in the case where a uniform velocity field exists in either the sheath or the external plasma. The problem is formulated in the flux-sheath geometry partly for the mathematical convenience of the Cartesian coordinate system, and the formulation is generalized to include perturbation velocities parallel to the flux sheath and perpendicular to the magnetic field. Variations in the perturbation amplitudes in the indicated direction are considered in order to elucidate possible wave modes along supergranule boundaries. Attention is given to a strictly two-dimensional case, the thin-flux-tube approach, and the three-dimensional case. The effect of the velocity field on the stability of the system is evaluated.
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