65 citations · 148 across the 9 of their papers we have counts for
9 papers
Small-scale and large-scale dynamos in global convection simulations of solar-like stars
Jörn Warnecke, Maarit J. Korpi-Lagg, Matthias Rheinhard +2
It has been recently shown numerically that a small-scale dynamo (SSD) instability could be possible in solar-like low magnetic Prandtl number plasmas. It has been proposed that th…
From convective stellar dynamo simulations to Zeeman-Doppler images
Thomas Hackman, Oleg Kochukhov, Mariangela Viviani +3
Zeeman-Doppler imaging (ZDI) is used to reconstruct the surface magnetic field of late-type stars from high resolution spectropolarimetric observations. The results are usually des…
Investigating global convective dynamos with mean-field models: full spectrum of turbulent effects required
Jörn Warnecke, Matthias Rheinhardt, Mariangela Viviani +3
The role of turbulent effects for dynamos in the Sun and stars continues to be debated. Mean-field (MF) theory provides a broadly used framework to connect these effects to fundame…
Hunting down the cause of solar magnetism
M. Viviani, A. Prabhu, J. Warnecke +4
To understand solar and stellar dynamos combining local and global numerical modelling with long-term observations is a challenging task: even with state of the art computational m…
Physically motivated heat conduction treatment in simulations of solar-like stars: effects on dynamo transitions
M. Viviani, M. J. Käpylä
Context. Results from global magnetoconvection simulations of solar-like stars are at odds with observations in many respects: They show a surplus of energy in the kinetic power sp…
Shapes of stellar activity cycles
T. Willamo, T. Hackman, J. J. Lehtinen +4
Magnetic activity cycles are an important phenomenon in both the Sun and other stars. The shape of the solar cycle is commonly characterised by a fast rise and a slower decline, bu…