We present 3D magnetohydrodynamic simulations of the fueling of supermassive black
holes in elliptical galaxies from a turbulent cooling medium on galactic scales, taking M87 …

Active galactic nuclei (AGNs) have been proposed as plausible sites for hosting a sizable
fraction of the binary black hole (BBH) mergers measured through gravitational waves …

The disk of an active galactic nucleus (AGN) is widely regarded as a prominent formation
channel of binary black hole (BBH) mergers that can be detected through gravitational …

Primordial black holes (PBHs), if they exist, may collide with and be captured by neutron
stars. We adopt a relativistic point-mass approximation to study this capture, the subsequent …

Fueling and feedback couple supermassive black holes (SMBHs) to their host galaxies
across many orders of magnitude in spatial and temporal scales, making this problem …

Perturber objects interacting with supermassive black hole accretion disks are often invoked
to explain observed quasiperiodic behavior in active galactic nuclei (AGN). We present …

Simulating accretion and feedback from the horizon scale of supermassive black holes
(SMBHs) out to galactic scales is challenging because of the vast range of scales involved …

We present a numerical study of relativistic Bondi-Hoyle-Lyttleton (BHL) accretion onto an
asymptotically flat black hole with synchronized hair. The hair is sourced by an ultralight …

In the absence of a sufficient amount of plasma injection into the black hole (BH)
magnetosphere, the force-free state of the magnetosphere cannot be maintained, leading to …

We present a new algorithm for the identification and physical characterization of current
sheets and reconnection sites in 2D and 3D large-scale relativistic magnetohydrodynamic …