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CAIXA: a catalogue of AGN in the XMM-Newton archive III. Excess Variance Analysis
Gabriele Ponti, Iossif Papadakis, Stefano Bianchi +5
We report on the results of the first XMM systematic "excess variance" study of all the radio quiet, X-ray un-obscured AGN. The entire sample consist of 161 sources observed by XMM…
1H0707-495 in 2011: An X-ray source within a gravitational radius of the event horizon
A. C. Fabian, A. Zoghbi, D. Wilkins +8
The Narrow Line Seyfert 1 Galaxy 1H0707-495 went in to a low state from 2010 December to 2011 February, discovered by a monitoring campaign using the X-Ray Telescope on the Swift s…
PG 1211+143: probing high frequency lags in a high mass AGN
B. De Marco, G. Ponti, P. Uttley +4
We present the timing analysis of the four archived XMM-Newton observations of PG 1211+143. The source is well-known for its spectral complexity, comprising a strong soft-excess an…
Optical and Near-IR long-term monitoring of NGC3783 and MR2251-178: evidence for variable near-IR emission from thin accretion discs
P. Lira, P. Arevalo, P. Uttley +2
We present long term near-IR light curves for two nearby AGN: NGC3783 and MR2251-178. The near-IR data are complemented with optical photometry obtained over the same period of tim…
The connection between radio-loudness and central surface brightness profiles in optically-selected low-luminosity active galaxies
A. J. Richings, P. Uttley, E. Kording
Recent results indicate a correlation between nuclear radio-loudness of active galaxies and their central stellar surface-brightness profiles, in that `core' galaxies (with inner l…
The causal connection between disc and power-law variability in hard state black hole X-ray binaries
P. Uttley, T. Wilkinson, P. Cassatella +4
We use the XMM-Newton EPIC-pn instrument in timing mode to extend spectral time-lag studies of hard state black hole X-ray binaries into the soft X-ray band. We show that variation…