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 …

As the luminosity of an accreting black hole drops to a few percent of Eddington, the
spectrum switches from the familiar soft state to a hard state that is well-described by a …

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 …

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 …

Relativistic X-ray emission lines from the inner accretion disks around black holes are
reviewed. Recent observations with the Chandra X-ray Observatory, X-ray Multi-Mirror …

We analyze simultaneously six composite RXTE spectra of GX 339–4 in the hard state
comprising 77 million counts collected over 196 ks. The source spectra are ordered by …

We present the first results of coordinated multiwavelength observations of the Galactic
black hole GX 339-4 in a canonical low/hard state, obtained during its 2004 outburst. XMM …

We analyze the X-ray spectra of the neutron star (NS) X-ray transients Aql X-1 and 4U 1608-
52, obtained with RXTE during more than 20 outbursts. We test commonly used spectral …

We investigate the relation between the optical extinction (AV) and the hydrogen column
density (NH) determined from X-ray observations of a large sample of Galactic sightlines …

The radio/X-ray correlation for hard and quiescent state black hole X-ray binaries is critically
investigated in this paper. New observations of known sources, along with newly discovered …