'Disc-jet' coupling in black hole X-ray binaries and active galactic nuclei

In this chapter I will review the status of our phenomenological understanding of the relation between accretion and outflows in accreting black hole systems. This understanding arises primarily from observing the relation between X-ray and longer wavelength (infrared, radio) emission. The view is necessarily a biased one, beginning with observations of X-ray binary systems, and attempting to see if they match with the general observational properties of active galactic nuclei.Comment: 28 pages, 15 figures, To appear in Belloni, T. (ed.): The Jet Paradigm - From Microquasars to Quasars, Lect. Notes Phys. 794 (2009

The radio flaring behaviour of GRO J1655-40: an analogy with extragalactic radio sources

Peer reviewe

2006 May-July major radio flare episodes in Cygnus X-3: spectrotiming analysis of the X-ray data

Peer reviewe

Microquasars : What do radio and X-ray observations tell us?

Microquasars, or X-ray binaries exhibiting radio jets, have been observed extensively at all wavelengths for the past decade or so. Primarily, they have been observed in the X-ray regimes and the radio. In this paper we review the radio and the X-ray behavior of the first two superluminal microquasars, GRS 1915+105 and GRO J1655-40. We show how GRO J1665-40 really does behave like a ``micro''-quasar based on the similarity of the radio properties between the source and quasars, and we also show some recent X-ray/γ-ray results obtained with INTEGRAL and RXTE on the notorious microquasar, GRS 1915+105

Unveiling the nature of the new transient IGR J19140+0951

International audienceIGR J19140+0951 was discovered during the first observation campaign of the famous microquasar GRS1915+105 (PI Hannikainen) by INTEGRAL IBIS/ISGRI instrument. The source, which is 1o from GRS1915+105 (corrected position), shows high variations of its X-ray luminosity and spectral variations on timescales from seconds to hours. According to the early INTEGRAL (AO1) and further RXTE (AO8 and AO9) observations and regarding the spectral behavior and the timescale variability, we propose the source to be a galactic X-ray binary probably hosting a neutron star

First INTEGRAL observations of GRS 1915+105

We present data from the first of six monitoring Open Time observations of GRS 1915+105 undertaken with the orbiting INTEGRAL satellite. The source was clearly detected with all three X-ray and gamma-ray instruments on board. GRS 1915+105 was in a highly variable state, as demonstrated by the JEM X-2 and ISGRI lightcurves. These and simultaneous RXTE/PCA lightcurves point to a novel type of variability pattern in the source. In addition, we fit the combined JEM X-2 and ISGRI spectrum between 3-300 keV with a disk blackbody + powerlaw model leading to typical parameter values found earlier at similar luminosity levels. A new transient, IGR J19140+098, was discovered during the present observation