Paradigm shifts in solar dynamo modeling

Simple item page
dc.creatorBrandenburg, Axel
dc.date2009-01-23
dc.date2009-05-09
dc.date.accessioned2026-07-07T13:12:48Z
dc.date.available2026-07-07T13:12:48Z
dc.descriptionSelected topics in solar dynamo theory are being highlighted. The possible relevance of the near-surface shear layer is discussed. The role of turbulent downward pumping is mentioned in connection with earlier concerns that a dynamo-generated magnetic field would be rapidly lost from the convection zone by magnetic buoyancy. It is argued that shear-mediated small-scale magnetic helicity fluxes are responsible for the success of some of the recent large-scale dynamo simulations. These fluxes help in disposing of excess small-scale magnetic helicity. This small-scale magnetic helicity, in turn, is generated in response to the production of an overall tilt in each Parker loop. Some preliminary calculations of this helicity flux are presented for a system with uniform shear. In the Sun the effects of magnetic helicity fluxes may be seen in coronal mass ejections shedding large amounts of magnetic helicity.
dc.description7 pages, 4 figures, final version
dc.identifierhttps://arxiv.org/abs/0901.3789
dc.identifierhttp://arxiv.org/abs/0901.3789
dc.identifierCosmic Magnetic Fields: From Planets, to Stars and Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 259, p. 159-166 (2008)
dc.identifierdoi:10.1017/S1743921309030403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/229686
dc.subjectSolar and Stellar Astrophysics
dc.titleParadigm shifts in solar dynamo modeling
dc.typetext

Files

Collections

arXiv