Do solar-type stars have magnetic cores - A question of stability

Details Do solar-type stars have magnetic cores - A question of stability Do solar-type stars have magnetic cores - A question of stability

Mar 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...228..898d&link_type=abstract

Astrophysical Journal, Part 1, vol. 228, Mar. 15, 1979, p. 898-902. NSF-supported research.

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28

Magnetic Cores, Magnetic Field Configurations, Protostars, Stellar Magnetic Fields, Stellar Rotation, Buoyancy, Coriolis Effect, Dynamic Stability, Dynamo Theory, Equations Of Motion, Spherical Shells, Temperature Gradients

Scientific paper

The differentially rotating, stably stratified core expected in new solar-type stars, according to Larson and others, should generate a strong toroidal magnetic field by winding a weak poloidal magnetic field. It is shown that such a toroidal magnetic field (with a symmetry axis) may be dynamically stable. The mild instability due to the associated perturbation of the gravitational energy can be neutralized by the Coriolis forces induced by a slow rotation of the stellar core. The possible significance of magnetic cores for solar-type stars is discussed.

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