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1999MNRAS.307L..31R - Mon. Not. R. Astron. Soc., 307, L31-L36 (1999/August-3)
Are galactic magnetohydrodynamic waves coupled ?
ROGAVA A.D., POEDTS S. and HEIRMAN S.
Abstract (from CDS):
In this Letter we prove, in a simple and exact analytic way, that the coupling between slow and fast waves, presumed by Fan & Lou on the basis of their numerical study, indeed exists. We show that the coupling is induced exclusively by the presence of the velocity shear in the gaseous disc, and that it leads to the mutual transformations of the different density wave modes. We argue that the shear-induced wave transformations may play a significant role in the overall dynamics of galactic MHD density waves.
Abstract Copyright: 1999, Royal Astronomical Society
Journal keyword(s): MHD - galaxies: magnetic fields - galaxies: spiral - galaxies: structure - radio continuum: galaxies
Simbad objects: 4
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