Magnetoconvection
1982; IOP Publishing; Volume: 45; Issue: 11 Linguagem: Inglês
10.1088/0034-4885/45/11/003
ISSN1361-6633
AutoresM. R. E. Proctor, N. O. Weiss,
Tópico(s)Stellar, planetary, and galactic studies
ResumoIn the outer layers of the Sun and other late-type stars thermal convection is affected by the presence of magnetic fields. This review deals principally with the interaction between convection and an externally imposed magnetic field in a Boussinesq fluid. Further effects of compressibility are considered briefly at the end. Magnetoconvection exhibits a particularly rich variety of behaviour when the ratio of the magnetic to the thermal diffusivity is small; the governing equations then allow both steady and oscillatory solutions. The authors' account provides a unified description of linear theory and of the interesting new results that are found in the non-linear regime. Recent work has classified the behaviour of isolated flux tubes and the relationship between time-dependent and steady solutions. Convection in a magnetic field is now the best-studied example of double-diffusive convection and serves as a guide to the behaviour of related systems.
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