Volume 461, Number 1, January I 2007
|Page(s)||295 - 301|
|Published online||26 September 2006|
Stability of toroidal magnetic fields in the solar tachocline
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, Germany e-mail: firstname.lastname@example.org
Accepted: 4 September 2006
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 100 G 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 100 kG. 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.
Key words: Sun: magnetic fields / instabilities / Sun: rotation / magnetic fields / magnetohydrodynamics (MHD)
© ESO, 2006
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.