We review the state of the art of three dimensional numerical simulations of solar and stellar
dynamos. We summarize fundamental constraints of numerical modelling and the …

Mean-field dynamo theory has important applications in solar physics and galactic
magnetism. We discuss some of the many turbulence effects relevant to the generation of …

Solar-type stars exhibit a rich variety of magnetic activity. Seeking to explore the convective
origins of this activity, we have carried out a series of global three-dimensional …

Young solar-type stars rotate rapidly and many are magnetically active. Some appear to
undergo magnetic cycles similar to the 22 yr solar activity cycle. We conduct simulations of …

In this paper, we examine the mode of dynamo action in the implicit large-eddy
magnetohydrodynamical simulation of solar convection reported upon in Ghizaru et al …

Recent advances in mean-field theory are reviewed and applications to the Sun, late-type
stars, accretion disks, galaxies and the early Universe are discussed. We focus particularly …

We present results from simulations of rotating magnetized turbulent convection in spherical
wedge geometry representing parts of the latitudinal and longitudinal extents of a star. Here …

Aims. We investigate dynamo action in global compressible solar-like convective dynamos
in the framework of mean-field theory. Methods. We simulate a solar-type star in a wedge …

The excitation and further sustenance of large-scale magnetic fields in rotating astrophysical
systems, including planets, stars, and galaxies, is generally thought to involve a fluid …

The role of turbulence in various astrophysical settings is reviewed. Among the differences
to laboratory and atmospheric turbulence we highlight the ubiquitous presence of magnetic …