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Flux transport dynamo coupled with a fast tachocline scenario

Published online by Cambridge University Press:  18 July 2013

Bidya Binay Karak  and
Kristof Petrovay
Bidya Binay Karak
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore 560012, India email: bidya_karak@physics.iisc.ernet.in
Kristof Petrovay
Affiliation:
Eötvös University, Department of Astronomy, Budapest, Hungary
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Abstract

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The tachocline is important in the solar dynamo for the generation and the storage of the magnetic fields. A most plausible explanation for the confinement of the tachocline is given by the fast tachocline model in which the tachocline is confined by the anisotropic momentum transfer by the Maxwell stress of the dynamo generated magnetic fields. We employ a flux transport dynamo model coupled with the simple feedback formula of this fast tachocline model which basically relates the thickness of the tachocline to the Maxwell stress. We find that this nonlinear coupling not only produces a stable solar-like dynamo solution but also a significant latitudinal variation in the tachocline thickness which is in agreement with the observations.

Keywords

Sun: dynamoSun: tachoclineSun: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 427 - 428
Copyright
Copyright © International Astronomical Union 2013 

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