An advective solar-type dynamo without the alpha effect

摘要: Context: Most solar and stellar dynamo models use the alpha-Omega scenario where magnetic field is generated by interplay between differential rotation (the Omega effect) a mean electromotive force due to helical turbulent convection flows alpha effect). There are, however, mechnisms that may complement effect or be an alternative it. Aims: We investigate of solar-type dynamos completely replaced two other mechanisms, namely x J shear-current effect, which both result from inhomogeneity field. Methods: studied axisymmetric mean-field containing rotation, effects, meridional circulation. The model calculations were carried out using profile Sun as obtained helioseismic measurements radial profiles quantities according standard interior. Results: Without flow, no satisfactory agreement with observations can obtained. With sufficiently strong circulation included, main properties large-scale field, namely, its oscillatory behavior, latitudinal drift towards equator within each half cycle, dipolar parity respect equatorial plane, are correctly reproduced. Conclusions: have thereby constructed first do not effect.