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Solar cycle as a dissipative magnetic structure

Published online by Cambridge University Press:  01 November 2006

A.A. Soloviev
Affiliation:
Central (Pulkovo) astronomical observatory, St-Petersburg; solov@gao.spb.ru
E.A. Kirichek
Affiliation:
Central (Pulkovo) astronomical observatory, St-Petersburg; solov@gao.spb.ru
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Abstract

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The dissipative model of Solar Magnetic Cycle (SMC) is discussed. According to this conception, at the beginning of each odd 11-yr cycle, a large-scale dissipative magnetic structure is formed in the convective zone of the Sun, as a result of complex nonlinear interaction between magnetic field and turbulent plasma velocity field. During the 22-yr cycle, this large-scale magnetic structure evolves through the convective “envelope” and atmosphere of the Sun. Two main effects determine the process: i) diffusion of magnetic field and ii) $\omega$-effect: the conversion of poloidal magnetic field into toroidal one due to the differential rotation.

Type
Contributed Papers
Copyright
© 2006 International Astronomical Union