Axisymmetric MHD instabilities in solar/stellar tachoclines
Dikpati, M., Cally, P. S., Gilman, P. A., & Miesch, M. S. (2009). Axisymmetric MHD instabilities in solar/stellar tachoclines. Solar-Stellar Dynamos As Revealed By Helio- And Asteroseismology, 416, 525-528.
We show that banded toroidal fields in the tachoclines of the Sun and other stars should be unstable to 3-D axisymmetric overturning modes if the peak toroidal field is ˜100 kG or more. This instability should fragment and limit the amplitude of toroidal fields in tachoclines.