Jets are ubiquitous in the Universe and are seen from a large number of astrophysical
objects including active galactic nuclei, gamma ray bursters, micro-quasars, proto-planetary …

We perform local, vertically stratified shearing-box MHD simulations of protoplanetary disks
(PPDs) at a fiducial radius of 1 AU that take into account the effects of both Ohmic resistivity …

The outer parts of standard steady-state accretion discs around quasi-stellar objects (QSOs)
are prone to self-gravity, and they might be expected to fragment into stars rather than feed …

We perform three-dimensional, vertically-stratified, local shearing-box ideal MHD
simulations of the magnetorotational instability (MRI) that include a net vertical magnetic flux …

We report results from global ideal MHD simulations that study thin accretion disks (with
thermal scale height H/R= 0.1 and 0.05) threaded by net vertical magnetic fields. Our …

Context. Accretion disks and astrophysical jets are used to model many active astrophysical
objects, such as young stars, relativistic stars, and active galactic nuclei. However, existing …

We present numerical magnetohydrodynamic (MHD) simulations of a magnetized accretion
disk launching trans-Alfvénic jets. These simulations, performed in a 2.5-dimensional time …

Requirements for magnetic coupling and accretion in the active layer of a protostellar disk
are re-examined, and some implications for thermal emission from the layer are discussed …

We report on a global, three-dimensional GRMHD simulation of an accretion torus
embedded in a large-scale vertical magnetic field orbiting a Schwarzschild black hole. This …

Since the publication of the first edition, the area of magnetic fields in binary stars has
continued to expand. The number of known AM Herculis binaries has more than doubled in …