177 citations · 2.4k across the 68 of their papers we have counts for
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Role of longitudinal activity complexes for solar and stellar dynamos
M. J. Mantere, Petri J. Käpylä, Jaan Pelt
In this paper we first discuss observational evidence of longitudinal concentrations of magnetic activity in the Sun and rapidly rotating late-type stars with outer convective enve…
Flux concentrations in turbulent convection
P. J. Käpylä, A. Brandenburg, N. Kleeorin +2
We present preliminary results from high resolution magneto-convection simulations where we find the formation of flux concentrations from an initially uniform magnetic field. We c…
Solar-like differential rotation and equatorward migration in a convective dynamo with a coronal envelope
Jörn Warnecke, Petri J. Käpylä, Maarit. J. Mantere +1
We present results of convective turbulent dynamo simulations including a coronal layer in a spherical wedge. We find an equatorward migration of the radial and azimuthal fields si…
Testing turbulent closure models with convection simulations
J. E. Snellman, P. J. Käpylä, M. J. Käpylä +2
We compare simple analytical closure models of homogeneous turbulent Boussinesq convection for stellar applications with three-dimensional simulations. We use simple analytical clo…
Cyclic magnetic activity due to turbulent convection in spherical wedge geometry
Petri J. Käpylä, Maarit J. Mantere, Axel Brandenburg
We report on simulations of turbulent, rotating, stratified, magnetohydrodynamic convection in spherical wedge geometry. An initially small-scale, random, weak-amplitude magnetic f…