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Solar dynamo model with nonlocal alpha-effect and diamagnetic pumping

Published online by Cambridge University Press:  18 July 2013

L. L. Kitchatinov  and
S. V. Olemskoy
L. L. Kitchatinov
Affiliation:
Institute for Solar-Terrestrial Physics, Lermontov Str. 126a, PO Box 291, Irkutsk 664033, Russia email: [email protected]; [email protected] Pulkovo Astronomical Observatory, St. Petersburg 196140, Russia
S. V. Olemskoy
Affiliation:
Institute for Solar-Terrestrial Physics, Lermontov Str. 126a, PO Box 291, Irkutsk 664033, Russia email: [email protected]; [email protected]
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Abstract

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Sunspot data and large-scale solar magnetic field data are used to demonstrate the operation of the Babcock-Leighton mechanism on the Sun. A dynamo model is developed that employs jointly a nonlocal alpha-effect of the Babcock-Leighton type and diamagnetic downward pumping. The pumping concentrates magnetic fields to the base of the convection zone. The magnetic cycle period, equatorial symmetry of the generated fields, their meridional drift, and the polar-to-toroidal field ratio obtained in the model agree with observations.

Keywords

Sun: activitySun: dynamo
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 429 - 430
Copyright
Copyright © International Astronomical Union 2013 

References

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