PLASMA PHYSICS IN AN ASTROPHYSICAL ENVIRONMENT.
Final scientific rept., 15 Nov 65-14 Nov 66.
KING'S COLL LONDON (ENGLAND)
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The stabilizing influence of a magnetic field on a differentially rotating star has been investigated and it has been demonstrated that a field of one gauss or more can prevent the development of a high degree of non uniform rotation during the early contactional stages of a stars evolution, and so prevent the formation of double stars. The effect of uniform rotation on the non radial modes of oscillation of a star has been investigated and the resulting oscillation frequencies and velocities calculated. This work has been extended to non uniformly rotating stars and results obtained so far indicate that differential rotation can cause instability. The effect of uniform rotation on the internal structure and observational properties of stars has also been actively investigated and results are given demonstrating these changes for a wide range a masses and rotational velocities. The transport of energy through low density surface layers of stars has been investigated for distorted stars, and the variation of emergent energy with position on the surface is given.
- Plasma Physics and Magnetohydrodynamics