On the Interaction between Convection and Magnetic Fields

Details On the Interaction between Convection and Magnetic Fields On the Interaction between Convection and Magnetic Fields

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...588.1183c&link_type=abstract

The Astrophysical Journal, Volume 588, Issue 2, pp. 1183-1198.

Astronomy and Astrophysics

Astronomy

95

Convection, Sun: Magnetic Fields, Sun: Photosphere

Scientific paper

Turbulent convection in the solar photosphere can act as a small-scale dynamo, maintaining a disordered magnetic field that is locally intense. On the other hand, convection is inhibited in the presence of a strong, externally imposed magnetic field, as for instance, in a sunspot. Large-scale, three-dimensional, numerical experiments on highly nonlinear magnetoconvection in a Boussinesq fluid show that there is a continuous transition from a dynamo regime through a convective regime to an oscillatory regime as the strength of the imposed magnetic field is progressively increased. The patterns found in these different regimes are described and analyzed.

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