Dynamo-driven plasmoid ejections above a spherical surface

2011/04/30 by J. Warnecke, Jörn Warnecke, Axel Brandenburg +3 · 63 citations
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Dynamo #Fluid dynamics and aerodynamics studies #Flux (metallurgy) #Geomagnetism and Paleomagnetism Studies #Magnetic flux #Plasmoid #Solar and Space Plasma Dynamics #Surface (topology) #Turbulence #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201117023

published in Astronomy and Astrophysics 534, A11 (EDP Sciences) · 11 pages, 19 figures, accepted in A&A

openalex publication_date 2011/08/03 · arxiv created 2011/08/17 · arxiv updated 2011/09/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims. We extend earlier models of turbulent dynamos with an upper, nearly force-free exterior to spherical geometry, and study how flux emerges from lower layers to the upper ones without being driven by magnetic buoyancy. We also study how this affects the possibility of plasmoid ejection.

Citations

• Electric current helicity in the solar atmosphere
• Dynamics of the Interplanetary Gas and Magnetic Fields.
• Doubly Helical Coronal Ejections from Dynamos and Their Role in Sustaining the Solar Cycle
• Simulations of nonhelical hydromagnetic turbulence
• The Case for a Distributed Solar Dynamo Shaped by Near‐Surface Shear
• Equatorial magnetic helicity flux in simulations with different gauges

Cited by

• Bipolar region formation in stratified two-layer turbulence
• Compensating Faraday Depolarization by Magnetic Helicity in the Solar Corona