157 citations · 1.1k across the 23 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…
Flip-flops of FK Comae Berenices
Thomas Hackman, Jaan Pelt, Maarit J. Mantere +6
FK Comae is a rapidly rotating magnetically active star, the light curve of which is modulated by cool spots on its surface. It was the first star where the "flip-flop" phenomenon…
New scaling for the alpha effect in slowly rotating turbulence
A. Brandenburg, O. Gressel, P. J. Käpylä +3
Using simulations of slowly rotating stratified turbulence, we show that the alpha effect responsible for the generation of astrophysical magnetic fields is proportional to the log…
The supernova-regulated ISM. II. The mean magnetic field
F. A. Gent, A. Shukurov, A. Fletcher +2
The origin and structure of the magnetic fields in the interstellar medium of spiral galaxies is investigated with 3D, non-ideal, compressible MHD simulations, including stratifica…
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…