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The flux ejection dynamo with small diffusivity

II. Ilustrative examples

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Abstract

A number of examples are worked out to illustrate the consequences of reverse flux ejection from the surface of a convective layer of conducting fluid. Generally the reverse flux ejection has the opposite effect of magnetic buoyancy, tending to bury the fields rather than bringing them through the surface. Even a weak flux ejection effect prevents the excape of magnetic field through the surface. Reverse flux ejection at the surface of an αω-dynamo profoundly alters the character of the solutions of the dynamo equations. Altogether, flux ejection serves to obscure the interpretation of magnetic observations. The outstanding problem now is to determine under what circumstances there exists cyclonic convection with rotations in excess of ±1/2π in the rising columns of fluid. Negative turbulent diffusion is expected to be a close companion of the flux ejection effect.

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Authors and Affiliations

  1. Department of Physics, Department of Astronomy and Astrophysics, University of Chicago, USA, Chicago, Ill.

    E. N. Parker

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  1. E. N. Parker
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This work was supported by the National Aeronautics and Space Administration under grant NGL 14-001-001.

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Parker, E.N. The flux ejection dynamo with small diffusivity. Astrophys Space Sci 85, 183–201 (1982). https://doi.org/10.1007/BF00653442

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  • DOI: https://doi.org/10.1007/BF00653442

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