The theory and numerical modelling of radiation processes and radiative transfer play a key
role in astrophysics: they provide the link between the physical properties of an object and …

We review the numerical techniques for ideal and non-ideal magneto-hydrodynamics (MHD)
used in the context of star formation simulations. We outline the specific challenges offered …

We introduce arepo-rt, a novel radiation hydrodynamic (RHD) solver for the unstructured
moving-mesh code arepo. Our method solves the moment-based radiative transfer …

Context. Understanding the collapse of dense molecular cloud cores to stellar densities and
the subsequent evolution of the protostar is of importance to model the feedback effects such …

Context. Dust plays a key role during star, disk, and planet formation. Yet, its dynamics
during the protostellar collapse remain a poorly investigated field. Recent studies seem to …

Context. The transport of angular momentum is fundamental during the formation of low-
mass stars; too little removal and rotation ensures stellar densities are never reached, too …

Context. Massive star formation remains one of the most challenging problems in
astrophysics, as illustrated by the fundamental issues of the radiative pressure barrier and …

We present an implementation of an adaptive ray-tracing (ART) module in the Athena
hydrodynamics code that accurately and efficiently handles the radiative transfer involving …

Context. Small dust grains are essential ingredients of star, disk and planet formation. Aims.
We present an Eulerian numerical approach to study small dust grain dynamics in the …

Astrophysical plasmas are subject to a tight connection between magnetic fields and the
diffusion of particles, which leads to an anisotropic transport of energy. Under the fluid …