Can the solar tachocline host strong magnetic fields?

Details Can the solar tachocline host strong magnetic fields? Can the solar tachocline host strong magnetic fields?

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...8e..16s&link_type=abstract

Solar and Stellar Activity Cycles, 26th meeting of the IAU, Joint Discussion 8, 17-18 August 2006, Prague, Czech Republic, JD08,

Physics

Scientific paper

Several solar dynamo models assume that the tachocline is the seat of strong toroidal magnetic fields of the order of 10^5G. Our linearised MHD simulations show that the non-axisymmetric Tayler instabilities can make the tachocline unstable for a toroidal field of 100G or smaller. The instability is most dominant for small length scale along radius and latitude. We also find that azimuthal modes higher than m=1 may be the most unstable ones, but no higher than m=10. With critical fields as small as 100G, it is very unlikely that the tachocline can store strong toroidal magnetic fields.

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