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Full Sphere Axisymmetric Simulations of the Solar Dynamo

Nandy, Dibyendu and Chatterjee, Piyali and Choudhuri, Arnab Rai (2004) Full Sphere Axisymmetric Simulations of the Solar Dynamo. In: Proceedings of the International Astronomical Union, 2004 (IAUS22).

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Abstract

We explore a full sphere (2D axisymmetric) kinematic solar dynamo model based on the Babcock-Leighton idea that the poloidal field is generated in the surface layers from the decay of tilted bipolar solar active regions. This model incorporates the helioseismically deduced solar rotation profile and an algorithm for buoyancy motivated from simulations of flux tube dynamics. A prescribed deep meridional circulation plays an important role in the advection of magnetic flux. We specifically address the parity issue and show that – contrary to some recent claims – the Babcock-Leighton dynamo can reproduce solar-like dipolar parity if certain reasonable conditions are satisfied in the solar interior, the most important requirement being that the poloidal field of the two hemispheres be efficiently coupled across the equator.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Cambridge University Press.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 17 Aug 2011 07:00
Last Modified: 17 Aug 2011 07:00
URI: http://eprints.iisc.ernet.in/id/eprint/39934

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