Helicity generation andα-effect by Tayler instability with z-dependent differential rotation

2007/05/31 by M. Gellert, G. Rüdiger, D. Elstner
Biochemistry, Genetics and Molecular Biology · Physics and Astronomy · #Astro and Planetary Science #Geomagnetism and Paleomagnetism Studies #Solar and Space Plasma Dynamics #astro-ph

paper · pdf · doi:10.1051/0004-6361:20077781

published as Astron.Astrophys.479:L33-L36,2008 · accepted for publication in A&A

openalex publication_date 2008/01/09 · arxiv created 2008/02/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

Aims.We investigate the instability of toroidal magnetic fields resulting from the action of z-dependent differential rotation on a given axial field in a cylindrical enclosure where, in particular, the helicity of the resulting nonaxisymmetric flow is of interest. We probe the idea that helicity is related to the external field and the differential rotation as .

Citations

• A fossil origin for the magnetic field in A stars and white dwarfs