Solar dynamo model with nonlocal alpha-effect |
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| Authors: | L L Kitchatinov S V Olemskoy |
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| Institution: | (1) HAO, National Center for Atmospheric Research, Boulder, CO, USA |
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| Abstract: | The first results of the solar dynamo model that allows for the diamagnetic effect of inhomogeneous turbulence and the nonlocal
alpha-effect due to the rise ofmagnetic loops are discussed. The nonlocal alpha-effect is not subject to the catastrophic
quenching related to the conservation of magnetic helicity. Given the diamagnetic pumping, the magnetic fields are concentrated
near the base of the convection zone, although the distributed-typemodel covers the entire thickness of the convection zone.
Themagnetic cycle period, the equatorial symmetry of the field, its meridional drift, and the polar-to-toroidal field ratio
obtained in the model are in agreement with observations. There is also some disagreement with observations pointing the ways
of improving the model. |
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| Keywords: | |
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