The Sun's magnetic field is the engine and energy source driving all phenomena collectively
defining solar activity, which in turn structures the whole heliosphere and significantly …

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 …

Several recent advances in turbulent dynamo theory are reviewed. High resolution
simulations of small-scale and large-scale dynamo action in periodic domains are compared …

In this paper, written as a general historical and technical introduction to the various
contributions of the collection “Solar and Stellar Dynamo: A New Era”, we review the …

Context. Hot luminous stars show a variety of phenomena in their photospheres and winds
which still lack clear physical explanation. Among these phenomena are photospheric …

Weak magnetic fields have recently been detected in a number of A-type stars, including
Vega and Sirius. At the same time, space photometry observations of A and late B-type stars …

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 …

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 …

A brief summary of the various observations and constraints that underlie solar dynamo
research are presented. The arguments that indicate that the solar dynamo is an alpha …

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 …