Gallo, Elena, Homan, Jeroen, Jonker, Peter, Tomsick, John
The Galactic black hole X-ray binary XTE J1650-500 entered a quiescent regime following the decline from the 2001-2002 outburst that led to its discovery. Here we report on the first detection of its...
Multi-wavelength observations of jets at high and low X-ray luminosities (2008)
I shall briefly review the observational properties of radio-emitting jets from Galactic X-ray binaries in relation with other wavebands: infrared, optical and X-ray. Special attention is paid to...
Resource Letter BH-2: Black Holes (2008)
This resource letter is designed to guide students, educators, and researchers through (some of) the literature on black holes. Both the physics and astrophysics of black holes are discussed. Breadth...
AMUSE-Virgo I. Super-massive black holes in low-mass spheroids (2007)
Gallo, Elena, Treu, Tommaso, Jacob, Jeremy, Woo, Jong-Hak, Marshall, Phil, Antonucci, Robert
We present the first results from the AGN Multiwavelength Survey of Early-type galaxies in the Virgo cluster (AMUSE-Virgo). This large program targets 100 early-type galaxies with the Advanced CCD...
Galactic X-ray binary jets (2007)
With their relatively fast variability time-scales, Galactic X-ray binaries provide an excellent laboratory to explore the physics of accretion and related phenomena, most notably outflows, over...
Jets from the faintest black holes (2007)
The question whether quiescent black hole X-ray binaries are capable of powering relativistic outflows is addressed by means of simultaneous radio/X-ray observations of a nearby system steadily...
Radio emission and jets from Galactic microquasars (2006)
Thanks to aggressive campaigns of multi-wavelength observations of X-ray binaries in outbursts over the last decade or so, we have now reached a reasonable understanding of their radio phenomenology...
Jet-powered optical nebulae from X-ray binaries (2006)
Russell, David M., Fender, Rob P., Gallo, Elena, Kaiser, Christian R.
Accreting black holes and neutron stars release an unknown fraction of the infalling particles and energy in the form of collimated jets. The jets themselves are radiatively inefficient, but their...
Homan, Jeroen, Van Der Klis, Michiel, Wijnands, Rudy, Belloni, Tomaso, Fender, Rob, Klein-Wolt, Marc, ...
(Abridged) We report on ten weeks of RXTE observations of the X-ray transient XTE J1701-462. Comparisons with other sources suggest it had all the characteristics of the neutron star Z sources (the...
Accretion modes and jet production in black hole X-ray binaries (2005)
We review our current understanding of the radio properties of black hole X-ray binaries in connection with the X-ray spectral states, and discuss them in the framework of the recently proposed...
A unified model for black hole X-ray binary jets ? (2005)
Fender, Rob, Belloni, Tomaso, Gallo, Elena
We have recently put forward a 'unified' semi-empirical model for the coupling between accretion and jet production in galactic black hole X-ray binaries (published in MNRAS, 2004). In this paper we...
Black hole X-ray binary jets (2005)
Gallo, Elena, Fender, Rob, Kaiser, Christian
Relativistic jets powered by stellar mass black holes in X-ray binaries appear to come in two types: steady outflows associated with hard X-ray states and large scale discrete ejections associated...
Letter to Nature: A dark jet dominates the power output of the stellar black hole Cygnus X-1 (2005)
Gallo, Elena, Fender, Rob, Kaiser, Christian, Russell, David, Morganti, Rafella, Oosterloo, Tom, ...
Black holes undergoing accretion are thought to emit the bulk of their power in the X-ray band by releasing the gravitational potential energy of the infalling matter1. At the same time, they are...
The radio spectrum of a quiescent stellar mass black hole (2004)
Gallo, Elena, Fender, Rob, Hynes, Rob
Observations of V404 Cyg performed with the Westerbork Synthesis Radio Telescope at four frequencies, over the interval 1.4-8.4 GHz, have provided us with the first broadband radio spectrum of a...
A transient large-scale relativistic radio jet from GX 339-4 (2003)
Gallo, Elena, Corbel, Stephane, Fender, Rob, Maccarone, Tom, Tzioumis, Tasso
We report on the formation and evolution of a large-scale, synchrotron-emitting jet from the black hole candidate and X-ray binary system GX 339-4. In 2002 May, the source moved from a low/hard to a...
A universal radio/X-ray correlation in low/hard state black hole binaries (2003)
Gallo, Elena, Fender, Rob, Pooley, Guy
We present a comprehensive study of (quasi-)simultaneous radio:X-ray observations of stellar black hole binaries during the spectrally hard X-ray state, finding evidence for a strong correlation...
Maccarone, Thomas J., Gallo, Elena, Fender, Rob
A large sample of active galactic nuclei (AGN) studied here shows a `quenching' of the radio emission that occurs when the luminosity is from a few per cent to about 10 per cent of the Eddington...