On the problem of solar magnetic field generation

Authors
Citation
Yv. Vandakurov, On the problem of solar magnetic field generation, TECH PHYS L, 27(9), 2001, pp. 769-772
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
TECHNICAL PHYSICS LETTERS
ISSN journal
10637850 → ACNP
Volume
27
Issue
9
Year of publication
2001
Pages
769 - 772
Database
ISI
SICI code
1063-7850(2001)27:9<769:OTPOSM>2.0.ZU;2-C
Abstract
Generation of a nonaxisymmetric, predominantly toroidal magnetic field in t he convective layer of the Sun is considered assuming that the process is r elated to a decrease in the energy consumed for the convective heat transfe r. It is also assumed that the field is antisymmetric relative to the equat orial plane and the field strength varies in proportion to the sine or cosi ne of the azimuthal angle. It is shown that the field strength increases wh en both a radial gradient of the angular rotation velocity and a steady-sta te axisymmetric meridional substance circulation are present. A change in t he direction of the poloidal motion (leading to a change in the overall fie ld sign) is assumed to take place on attaining a limiting field strength. T his is probably related to the excitation of the corresponding turbulent me dium viscosity. In the proposed model, a restart of the field generation pr ocess is induced by a change in the magnetic field sign. (C) 2001 MAIK "Nau ka/Interperiodica".