Wednesday, February 6, 2013

1302.0943 (V. V. Pipin et al.)

The mean-field solar dynamo with double cell meridional circulation pattern    [PDF]

V. V. Pipin, A. G. Kosovichev
The paper addresses the question whether the dynamo remains of the solar type if it is coupled with the two-cell in radius meridional circulation pattern. The answer is positive for a wide class of dynamo models that take into account the subsurface rotational shear. We show that the Gleisberg-type cycles, representing variations of 11-year on the centure time scale, can be generated due to a nonlinear resonance between the dynamo wave, and the large-scale magnetic field amplification in the middle of the convection zone as a result of the convergent meridional shearing flows. The conditions of such resonant interaction depends on the speed of the meridional flow and other details of the model.
View original: http://arxiv.org/abs/1302.0943

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