Mixing zones in magnetized differentially rotating stars

Details Mixing zones in magnetized differentially rotating stars Mixing zones in magnetized differentially rotating stars

2005-09-29

arxiv.org/abs/astro-ph/0509877v1

Astronomy and Astrophysics

Astrophysics

8 pages, accepted by Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20053197

We study the secular instability of magnetized differentially rotating radiative zones taking account of viscosity and magnetic and thermal diffusivities. The considered instability generalizes the well-known Goldreich-Schubert-Fricke instability for the case of a sufficiently strong magnetic field. In magnetized stars, instability can lead to a formation of non-spherical unstable zones where weak turbulence mixes the material between the surface and interiors. Such unstable zones can manifest themselves by a non-spherical distribution of abundance anormalies on the stellar surface.

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