THE SUBSURFACE-SHEAR-SHAPED SOLAR αΩ DYNAMO

V. V. Pipin; A. G. Kosovichev

doi:10.1088/2041-8205/727/2/L45

THE SUBSURFACE-SHEAR-SHAPED SOLAR αΩ DYNAMO

V. V. Pipin, A. G. Kosovichev

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

We propose a solar dynamo model distributed in the bulk of the convection zone with toroidal magnetic-field flux concentrated in a near-surface layer. We show that if the boundary conditions at the top of the dynamo region allow the large-scale toroidal magnetic fields to penetrate close to the surface, then the modeled butterfly diagram for the toroidal magnetic field in the upper convection zone is formed by the subsurface rotational shear layer. The model is in agreement with observed properties of the magnetic solar cycle.

Original language	English (US)
Article number	L45
Journal	Astrophysical Journal Letters
Volume	727
Issue number	2
DOIs	https://doi.org/10.1088/2041-8205/727/2/L45
State	Published - Feb 1 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Keywords

Sun: dynamo
dynamo
magnetohydrodynamics (MHD)

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10.1088/2041-8205/727/2/L45

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abstract = "We propose a solar dynamo model distributed in the bulk of the convection zone with toroidal magnetic-field flux concentrated in a near-surface layer. We show that if the boundary conditions at the top of the dynamo region allow the large-scale toroidal magnetic fields to penetrate close to the surface, then the modeled butterfly diagram for the toroidal magnetic field in the upper convection zone is formed by the subsurface rotational shear layer. The model is in agreement with observed properties of the magnetic solar cycle.",

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AB - We propose a solar dynamo model distributed in the bulk of the convection zone with toroidal magnetic-field flux concentrated in a near-surface layer. We show that if the boundary conditions at the top of the dynamo region allow the large-scale toroidal magnetic fields to penetrate close to the surface, then the modeled butterfly diagram for the toroidal magnetic field in the upper convection zone is formed by the subsurface rotational shear layer. The model is in agreement with observed properties of the magnetic solar cycle.

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KW - magnetohydrodynamics (MHD)

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THE SUBSURFACE-SHEAR-SHAPED SOLAR αΩ DYNAMO

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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