Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998arep...42..122k&link_type=abstract
Astronomy Reports, Volume 42, Issue 1, January 1998, pp.122-126
Astronomy and Astrophysics
Astronomy
8
Scientific paper
The influence of global rotation and large-scale magnetism on turbulent motions during the excitement of magnetic induction by gyrotropic turbulence (the alpha effect) in the solar convective zone (SCZ) is studied. The contributions to the alpha effect of radial plasma-density gradients and the turbulence intensity are taken into account. Calculations performed for the SCZ model of Stix show that the components of the tensor have very different radial and latitudinal dependences. The magnetic quenching (or so-called alpha quenching), which decelerates the magnetic induction, is calculated for the lower part of the SCZ, where strong large-scale magnetic fields B = 3000-4000 G can be sustained due to nonlinear turbulent diamagnetism. Substantial alpha quenching [quenching function Psi_alpha(^Beta) ~= 0.4] is found near the base of the SCZ. terms show
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