Convective mechanism of amplification and structuring of magnetic fields

Autor:	Olga Semenovna Mazhorova, A. V. Getling, V V Kolmychkov
Rok vydání:	2012
Předmět:	Physics::Fluid Dynamics Convection Physics Space and Planetary Science Astronomy and Astrophysics Geophysics Structuring Mechanism (sociology) Magnetic field
Zdroj:	Proceedings of the International Astronomical Union. 8:137-142
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921313002366
Popis:	Magnetoconvection in a horizontal layer of incompressible fluid is simulated numerically. The initial magnetic field is assumed to be uniform and horizontal. The interaction of quasi-ordered cellular convection with the magnetic field is shown to be able to produce bipolar (and also diverse more complex) configurations of a substantially amplified magnetic field. The operation of this mechanism, which can be regarded as a modification of the mechanism suggested by Tverskoi (1966), is controlled by the very topology of the cellular flow, should be manifest on various spatial scales, and does not require strong initial fields. Magnetic configurations develop both in the central parts of convection cells, where circulatory fluid motion “winds” magnetic field lines, and in the network formed by their peripheral regions due to the “sweeping” of magnetic field lines.
Databáze:	OpenAIRE
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