A simple dynamo model and the anisotropic alpha-effect

Details A simple dynamo model and the anisotropic alpha-effect A simple dynamo model and the anisotropic alpha-effect

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...191..374d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 191, no. 2, Feb. 1988, p. 374-380.

Astronomy and Astrophysics

Astrophysics

9

Dynamo Theory, Magnetohydrodynamic Turbulence, Solar Magnetic Field, Anisotropy, Chromosphere, Convection

Scientific paper

The α-term in dynamo theory is evaluated in the quasi-linear approximation with no assumption concerning the isotropy of the turbulent motions. The resulting expression for α is discussed in the framework of a dynamo model depending only on time and having a simple buoyancy term. It is argued that the main cyclic solar magnetic field is amplified in the lower boundary layer of the solar convection zone whereas the convection zone proper generates a weak, stochastic, background, magnetic field.

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