Trapped waves in open stellar atmospheres.
Abstract
Linear MHD waves whose energy remains localized in an unbounded stellar atmosphere are considered analytically and numerically. The atmosphere is modelled by a stratified fully ionized plasma with both the gravity force and the gradient of the unperturbed fluid quantities aligned along the vertical z-axis. The temperature is taken to have a linear profile while the magnetic field is assumed horizontal and homogeneous. The atmosphere is semi-infinite with a solid boundary at its bottom (the stellar photosphere). In such a system, the authors are looking for solutions localized in space and that could be treated as eigenmodes.
- Publication:
-
Publications de l'Observatoire Astronomique de Beograd
- Pub Date:
- October 1996
- Bibcode:
- 1996POBeo..54...59P
- Keywords:
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- Stellar Atmospheres: Models;
- Stellar Atmospheres: Magnetohydrodynamics