When astrophysical jets were discovered one hundred years ago, the field of numerical
simulations did not yet exit. Since the arrival of programmable computers though, numerical …

Long-lived, stable jets are observed in a wide variety of systems, from protostars, through
Galactic compact objects to active galactic nuclei (AGN). Magnetic fields play a central role …

The global evolution and dispersal of protoplanetary disks (PPDs) are governed by disk
angular-momentum transport and mass-loss processes. Recent numerical studies suggest …

ABSTRACT OJ287 is the best candidate active galactic nucleus (AGN) for hosting a
supermassive binary black hole (SMBBH) at very close separation. We present 120 Very …

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 …

Outflows driven by large-scale magnetic fields likely play an important role in the evolution
and dispersal of protoplanetary disks and in setting the conditions for planet formation. We …

ABSTRACT NASA's NICER telescope has recently provided evidence for non-dipolar
magnetic field structures in rotation-powered millisecond pulsars. These stars are assumed …

Supermassive black hole binaries may be detectable by an upcoming suite of gravitational
wave experiments. Their binary nature can also be revealed by radio jets via a short-period …

We present an analytical solution of a highly magnetized jet/wind flow. The left side of the
general force-free jet/wind equation (the" pulsar" equation) is separated into a rotating and a …

We present a study of X-ray ionization of MHD accretion-disk winds in an effort to constrain
the physics underlying the highly ionized ultra-fast outflows (UFOs) inferred by X-ray …