Stellar-mass black holes and neutron stars represent extremes in gravity, density, and
magnetic fields. They therefore serve as key objects in the study of multiple frontiers of …

Strong gravitational lensing of quasars has the potential to unlock the poorly understood
physics of these fascinating objects, as well as serve as a probe of the lensing mass …

General relativity has passed all solar system experiments and neutron star based tests,
such as binary pulsar observations, with flying colors. A more exotic arena for testing …

As matter accretes onto the central supermassive black holes in active galactic nuclei
(AGNs), X-rays are emitted. We present a population synthesis model that accounts for the …

We present results from the Keck Baryonic Structure Survey (KBSS) including the first
detailed measurements of the column densities, kinematics, and internal energy of metal …

Accretion onto black holes is key to their growth over cosmic time, especially during the
active galactic nuclei phase when the inflowing material forms a radiatively efficient …

We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548
to investigate the temperature structure of its accretion disk. The 19 overlapping continuum …

The physics of active super massive black holes (BHs) is governed by their mass (M BH),
spin (a*), and accretion rate (). This work is the first in a series of papers with the aim of …

The magnifications of compact-source lenses are extremely sensitive to the presence of low-
mass dark matter haloes along the entire sightline from the source to the observer …

We present optical continuum lags for two Seyfert 1 galaxies, MCG+ 08-11-011 and NGC
2617, using monitoring data from a reverberation mapping campaign carried out in 2014 …