The Sun is our nearest star; it is also the most important star that determines life on Earth. A
large variety of phenomena observed on the Sun's surface, with potential impact on Earth, is …

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 …

These lecture notes are based on a tutorial given in 2017 at a plasma physics winter school
in Les Houches. Their aim is to provide a self-contained graduate-student level introduction …

It has been a prevailing picture that active regions on the solar surface originate from a
strong toroidal magnetic field stored in the overshoot region at the base of the solar …

We use the anelastic spherical harmonic code to model the convective dynamo of solar-type
stars. Based on a series of 15 3D MHD simulations spanning four bins in rotation and mass …

The most widely accepted model of the solar cycle is the flux transport dynamo model. This
model evolved out of the traditional α Ω dynamo model which was first developed at a time …

We present three-dimensional nonlinear magnetohydrodynamic simulations of the interiors
of fully convective M dwarfs. Our models consider 0.3 solar-mass stars using the Anelastic …

The Sun rotates differentially with a fast equator and slow pole. Convection in the solar
interior is thought to maintain the differential rotation. However, although many numerical …

We perform a calibration of the mixing length of convection in stellar structure models
against realistic 3D radiation-coupled hydrodynamics simulations of convection in stellar …

Meridional flow in the solar interior plays an important role in redistributing angular
momentum and transporting magnetic flux inside the Sun. Although it has long been …