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A low-mode dynamo with meridional circulation and dipolar symmetry of the magnetic field

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Abstract

A dynamic system for the Parker dynamo including meridional circulation that is applicable to astrophysical objects is constructed. The meridional circulation is able to control the regimes for the generation of magnetic fields. If the meridional flows are weak, regimes with steady oscillations, dynamo bursts, fluctuations, and chaotic components are possible. When the meridional circulation is strengthened, the range of dynamo numbers required for fluctuations and dynamo bursts is reduced, and gradually vanishes; at the same time, the range required for oscillations is increased and raised to higher dynamo numbers. The latitude-time distributions of the toroidal and poloidal magnetic fields for steady oscillations are presented.

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Authors and Affiliations

  1. Lomonosov Moscow State University, Vorob’evy gory, Moscow, 119899, Russia

    E. P. Popova

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  1. E. P. Popova
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Correspondence to E. P. Popova.

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Original Russian Text © E.P. Popova, 2012, published in Astronomicheskii Zhurnal, 2012, Vol. 89, No. 10, pp. 866–871.

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Popova, E.P. A low-mode dynamo with meridional circulation and dipolar symmetry of the magnetic field. Astron. Rep. 56, 784–789 (2012). https://doi.org/10.1134/S1063772912100046

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  • DOI: https://doi.org/10.1134/S1063772912100046

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