On the problem of stellar rotation

Details On the problem of stellar rotation On the problem of stellar rotation

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...259..759b&link_type=abstract

Astrophysical Journal, Part 1, vol. 259, Aug. 15, 1982, p. 759-766. NSF-supported research.

Astronomy and Astrophysics

Astrophysics

29

Angular Momentum, Stellar Rotation, Axisymmetric Flow, Magnetohydrodynamic Stability, Magnetohydrostatics, Meridional Flow, Stellar Models, Zonal Flow (Meteorology)

Scientific paper

It is shown that initially steady Eddington-Sweet circulations in rotating stars change into a time dependent state within a period of rotation. Arguments are given in support of the thesis that a star relaxes into a state of purely zonal flow on the Eddington-Sweet time scale provided that such a state is stable. Constraints on the redistribution of angular momentum by axisymmetric motions are derived, and their importance in determining the asymptotic steady solution is emphasized. A simple model of rotating stars is presented which exhibits the necessary degree of freedom for the accommodation of general initial distributions of angular momentum.

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