167 citations · 494 across the 5 of their papers we have counts for
5 papers
Multiwavelength spectral and high time resolution observations of SWIFT J1753.5-0127: new activity?
M. Durant, P. Gandhi, T. Shahbaz +2
We have conducted an extensive observational campaign of SWIFT J1753.5-0127 during June 2007 after its bright outburst episode in 2005. We have performed multi-band optical photome…
Rapid optical and X-ray timing observations of GX 339-4: flux correlations at the onset of a low/hard state
P. Gandhi, K. Makishima, M. Durant +6
We present the discovery of optical/X-ray flux correlations on rapid timescales in the low/hard state of the Galactic black hole GX 339-4. The source had recently emerged from outb…
SWIFT J1753.5-0127: a surprising optical/X-ray cross-correlation function
Martin Durant, Poshak Gandhi, Tariq Shahbaz +4
We have conducted optical and X-ray simultaneous observations of SWIFT J1753.5-0127 with RXTE and ULTRACAM, while the system persisted in its relatively bright low/hard state. In t…
The effect of radiation pressure on dusty absorbing gas around AGN
A. C. Fabian, R. V. Vasudevan, P. Gandhi
Many Active Galactic Nuclei (AGN) are surrounded by gas which absorbs the radiation produced by accretion onto the central black hole and obscures the nucleus from direct view. The…
The mid IR -- hard X-ray correlation in AGN and its implications for dusty torus models
Hannes Horst, Poshak Gandhi, Alain Smette +1
Context: We investigate mid-infrared and X-ray properties of the dusty torus invoked in the unification scenario for active galactic nuclei. Aims: We use the relation between mid I…