The effect of closed boundary conditions on a stationary dynamo

Choudhuri, AR (1984) The effect of closed boundary conditions on a stationary dynamo. In: Astrophysical Journal, 281 (2). pp. 846-853.

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Abstract

One of two boundary conditions generally assumed in solutions of the dynamo equation is related to the disappearance of the azimuthal field at the boundary. Parker (1984) points out that for the realization of this condition the field must escape freely through the surface. Escape requires that the field be detached from the gas in which it is embedded. In the case of the sun, this can be accomplished only through reconnection in the tenuous gas above the visible surface. Parker concludes that the observed magnetic activity on the solar surface permits at most three percent of the emerging flux to escape. He arrives at the conclusion that, instead of B(phi) = 0, the partial derivative of B(phi) to r is equal to zero. The present investigation is concerned with the effect of changing the boundary condition according to Parker's conclusion. Implications for the solar convection zone are discussed.

Item Type:	Journal Article
Publication:	Astrophysical Journal
Publisher:	Institute of physics
Additional Information:	Copyright for this article belongs to Institute of physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	21 Feb 2010 08:50
Last Modified:	19 Sep 2010 05:55
URI:	http://eprints.iisc.ac.in/id/eprint/25648

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