We review how the recent increase in X-ray and radio data from black hole and neutron star
binaries can be merged together with theoretical advances to give a coherent picture of the …

With most physicists and astrophysicists in agreement that black holes do indeed exist, the
focus of astrophysical black hole research has shifted to the detailed properties of these …

Accreting black holes emit highly collimated radio jets expanding at speeds approaching
light speed. Some of these jets appear to be expanding at superluminal speeds due to …

Recent X-ray polarimetric data on the prototypical black hole X-ray binary Cyg X-1 from the
Imaging X-ray Polarimetry Explorer present tight constraints on accretion geometry in the …

With the advent of more sensitive all-sky instruments, the transient universe is being probed
in greater depth than ever before. Taking advantage of available resources, we have …

We review some practical aspects of measuring the amplitude of variability in 'red noise'light
curves typical of those from active galactic nuclei (AGN). The quantities commonly used to …

A long-standing question is whether active galactic nuclei (AGN) vary like Galactic black
hole systems when appropriately scaled up by mass,,. If so, we can then determine how …

We review the properties of 40 X-ray binaries that contain either a confirmed black hole or a
black hole candidate. After discussing briefly the significance of these Galactic black holes to …

With the availability of the large database of black-hole transients from the Rossi X-Ray
Timing Explorer, the observed phenomenology has become very complex. The original …

The hard state of X-ray binaries (XRBs) is characterized by a power-law spectrum in the X-
ray band and a flat/inverted radio/IR spectrum associated with occasionally imaged compact …