Bipolar region formation in stratified two-layer turbulence

2015/02/28 by J. Warnecke, Jörn Warnecke, I. R. Losada +7
Engineering · Physics and Astronomy · #Fluid Dynamics and Turbulent Flows #Flux (metallurgy) #Instability #Ionosphere and magnetosphere dynamics #Magnetic field #Magnetic flux #Mechanism (biology) #Solar and Space Plasma Dynamics #Turbulence #Work (physics) #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201525880

published as A&A 589, A125 (2016) · 15 pages, 13 figures, Astronomy and Astrophysics, published

openalex publication_date 2016/03/07 · arxiv created 2016/04/26 · arxiv updated 2016/04/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Aims. This work presents an extensive study of the previously discovered formation of bipolar flux concentrations in a two-layer model. We interpret the formation process in terms of negative effective magnetic pressure instability (NEMPI), which is a possible mechanism to explain the origin of sunspots.

Citations

• Negative effective magnetic pressure in turbulent convection
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• ON THE CAUSE OF SOLAR-LIKE EQUATORWARD MIGRATION IN GLOBAL CONVECTIVE DYNAMO SIMULATIONS
• The Case for a Distributed Solar Dynamo Shaped by Near‐Surface Shear