61 citations · 266 across the 9 of their papers we have counts for
8 papers
Ejections of magnetic structures above a spherical wedge driven by a convective dynamo with differential rotation
Jörn Warnecke, Petri J. Käpylä, Maarit. J. Mantere +1
We combine a convectively driven dynamo in a spherical shell with a nearly isothermal density-stratified cooling layer that mimics some aspects of a stellar corona to study the eme…
Spontaneous formation of flux concentrations in a stratified layer
Koen Kemel, Axel Brandenburg, Nathan Kleeorin +2
The negative effective magnetic pressure instability discovered recently in direct numerical simulations (DNS) may play a crucial role in the formation of sunspots and active regio…
Coronal ejections from convective spherical shell dynamos
Jörn Warnecke, Petri J. Käpylä, Maarit. J. Mantere +1
We present a three-dimensional model of rotating convection combined with a simplified corona in spherical coordinates. The motions in the convection zone generate a large-scale ma…
Magnetic helicity fluxes in an alpha-squared dynamo embedded in a halo
A. Hubbard, A. Brandenburg
We present the results of simulations of forced turbulence in a slab where the mean kinetic helicity has a maximum near the mid-plane, generating gradients of magnetic helicity of…
Stellar dynamo driven wind braking instead of disc coupling
Brigitta von Rekowski, Axel Brandenburg
Star-disc coupling is considered in numerical models where the stellar field is not an imposed perfect dipole, but instead a more irregular self-adjusting dynamo-generated field. U…
Radiative transfer in decomposed domains
T. Heinemann, W. Dobler, A. Nordlund +1
An efficient algorithm for calculating radiative transfer on massively parallel computers using domain decomposition is presented. The integral formulation of the transfer equation…