Change search
ReferencesLink to record
Permanent link

Direct link
Cyclic magnetic activity due to turbulent convection in spherical wedge geometry
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-7304-021X
2012 (English)In: Astrophysical Journal Letters, ISSN 2041-8205, Vol. 755, no 1, L22- p.Article in journal (Refereed) Published
Abstract [en]

We report on simulations of turbulent, rotating, stratified, magnetohydrodynamic convection in spherical wedge geometry. An initially small-scale, random, weak-amplitude magnetic field is amplified by several orders of magnitude in the course of the simulation to form oscillatory large-scale fields in the saturated state of the dynamo. The differential rotation is solar-like (fast equator), but neither coherent meridional poleward circulation nor near-surface shear layer develop in these runs. In addition to a poleward branch of magnetic activity beyond 50 degrees latitude, we find for the first time a pronounced equatorward branch at around 20 degrees latitude, reminiscent of the solar cycle.

Place, publisher, year, edition, pages
2012. Vol. 755, no 1, L22- p.
Keyword [en]
convection, magnetohydrodynamics (MHD), turbulence
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-102124DOI: 10.1088/2041-8205/755/1/L22ISI: 000306930700022ScopusID: 2-s2.0-84864477375OAI: diva2:551258
Swedish Research Council, 621-2007-4064EU, European Research Council, 227952

QC 20120910

Available from: 2012-09-10 Created: 2012-09-10 Last updated: 2013-08-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Brandenburg, Axel
By organisation
Nordic Institute for Theoretical Physics NORDITA
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 11 hits
ReferencesLink to record
Permanent link

Direct link