The Effect of a Magnetic Field on Stellar Pulsations as a Singular Perturbation Problem
Abstract
The perturbation problem that describes the effect of a weak magnetic field on stellar adiabatic oscillation is considered. This perturbation problem is singular when the magnetic field does not vanish at the stellar surface, and a regular perturbation scheme fails where the magnetic pressure is comparable to the thermodynamic pressure. The application of the Method of Matched Asymptotic Expansion is used to obtain expressions for the eigenfunctions and the eigenfrequencies.
 Publication:

Space Science Reviews
 Pub Date:
 December 1980
 DOI:
 10.1007/BF00168365
 Bibcode:
 1980SSRv...27..661G
 Keywords:

 Magnetic Effects;
 Perturbation Theory;
 Stellar Magnetic Fields;
 Stellar Oscillations;
 Stellar Structure;
 Adiabatic Conditions;
 Eigenvectors;
 Surface Geometry;
 Variable Stars;
 Vibration Mode;
 Astrophysics