Solar-cycle dynamo wave propagation

Abstract

Dynamo waves, as solutions of the dynamo equations governing the solar cycle, propagate along isorotation surfaces inside the sun. This theorem, universal in most of the dynamo models of the solar cycle, is proven analytically, and the nature of the propagation is analyzed. The effects of meridional circulation and the diffusion process on the propagation nature of the dynamo waves are estimated. The importance of this theorem is stressed for understanding the solar cycle and for inferring the rotational law of the interior of the sun.