It is far from the complete picture, but i think I have put my numerical finger on the asymptotic fundamental turbulent magnetohydrodynamic mechanism driving the solar dynamo activity cycle, and can reasonably explain why big "realistic" solar models get it wrong and why their results are scattered all over the place. It's a long physics and numerics story built on a lot of previous research from many groups, in particular that of my colleague Axel Brandenburg, whose insights and long-term efforts on this problem have been profound and essential.
#Astrophysics

Ultimate large-Rm regime of the solar dynamo
https://arxiv.org/abs/2512.09536