SIMBAD references

2007A&A...461..295A - Astronomy and Astrophysics, volume 461, 295-301 (2007/1-1)

Stability of toroidal magnetic fields in the solar tachocline.

ARLT R., SULE A. and RUEDIGER G.

Abstract (from CDS):

The stability of toroidal magnetic fields in the radiative interior of the Sun is studied in a three-dimensional environment. The underlying differential rotation in the tachocline depends on both latitude and radius. We found stability limits for toroidal fields of only 100G even in the simplified, incompressible, but stably stratified case. Nonaxisymmetric modes are linearly unstable with a weak influence on the amplitude of the underlying differential rotation. We conclude that the tachocline is not a suitable location for the storage of magnetic fields as strong as 100kG. Since the results are based on an extrapolation of the numerical computations to lower solar diffusivities, high-resolution calculations at higher magnetic Reynolds numbers are required.

Abstract Copyright:

Journal keyword(s): Sun: magnetic fields - instabilities - Sun: rotation - magnetic fields - magnetohydrodynamics (MHD)

Simbad objects: 0

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