The excitation of torsional oscillations in a rotating star

Details The excitation of torsional oscillations in a rotating star The excitation of torsional oscillations in a rotating star

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..334v&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, April 1988, p. 334-343. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

Stellar Magnetic Fields, Stellar Oscillations, Stellar Rotation, Torsion, Solar Cycles, Temperature Gradients, Vibration Mode

Scientific paper

The stability of a slowly rotating star with a weak meridional magnetic field relative to the excitation of torsional oscillations having a large number of radial nodes is considered. It is proposed that the oscillation period is much longer than the rotational period. It is shown that thermal exchange in zones with a superadiabatic temperature gradient facilitates the self-excitation of torsional perturbations. A comparison is made between the latitudinal dependences of some torsional modes and those observed on the sun by LaBonte and Howard (1982).

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