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 …

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 …

Jetted astrophysical phenomena with black hole engines, including binary mergers, jetted
tidal disruption events, and X-ray binaries, require a large-scale vertical magnetic field for …

Planets appear to form in environments shaped by the gas flowing through protostellar disks
to the central young stars. The flows in turn are governed by orbital angular momentum …

Strongly magnetized accretion discs around black holes have attractive features that may
explain enigmatic aspects of X-ray binary behaviour. The structure and evolution of these …

Protoplanetary discs are made of gas and dust orbiting a young star. They are also the birth
place of planetary systems, which motivates a large amount of observational and theoretical …

Previous studies of the non-linear regime of the magnetorotational instability in one
particular type of shearing box model–unstratified with no net magnetic flux–find that without …

The formation and evolution of a wide class of astrophysical objects are governed by
turbulent, magnetized accretion disks. Understanding their secular dynamics is of primary …

The azimuthal version of the magnetorotational instability (MRI) is a nonaxisymmetric
instability of a hydrodynamically stable differentially rotating flow under the influence of a …

We perform a local stability analysis of rotational flows in the presence of a constant vertical
magnetic field and an azimuthal magnetic field with a general radial dependence …