On the transport of magnetic fields by solar-like stratified convection

The interaction of magnetic elds and stratied convection was studied in the context of the solar and late type stellar dynamos by using numerical 3D MHD simulations. The topology of stratied asymmetric and over-turning convection enables a pumping mechanism that may render the magnetic flux storage problem obsolete. The inclusion of open boundary conditions leads to a considerable flux loss unless the open boundary is placed close to the physical boundary. Simulations including solar-like latitudinal shear indicates that a toroidal eld of several tens of kilo-Gauss may be held down by the pumping mechanism.