160 citations · 433 across the 13 of their papers we have counts for
9 papers · 1 filter
Investigating a Fluctuating-accretion Model for the Spectral-timing Properties of Accreting Black Hole Systems
P. Arevalo, P. Uttley
The fluctuating accretion model of Lyubarskii (1997) and its extension by Kotov et al. (2001), seeks to explain the spectral-timing properties of the X-ray variability of accreting…
New insights into ultraluminous X-ray sources from deep XMM-Newton observations
T. P. Roberts, A. -M. Stobbart, M. R. Goad +4
The controversy over whether ultraluminous X-ray sources (ULXs) contain a new intermediate-mass class of black holes (IMBHs) remains unresolved. We present new analyses of the deep…
Evidence for Gravitational Infall of Matter onto the Super-Massive Black Hole in the quasar PG 1211+143?
J. N. Reeves, K. Pounds, P. Uttley +5
We report the detection of redshifted iron K-alpha absorption lines in the Chandra LETG spectrum of the narrow-line quasar, PG 1211+143. The absorption lines are observed at 4.22 k…
Blazars and the emerging AGN/black hole X-ray binary paradigm
P. Uttley
We briefly review the emerging paradigm which links the radio-quiet and radio-loud classes of AGN to the different accretion states observed in stellar mass black hole X-ray binary…
X-ray variability of NGC 3227 and NGC 5506 and the nature of AGN `states'
P. Uttley, I. M. McHardy
We use X-ray monitoring data obtained over a broad range of time-scales to measure the broadband power spectral density functions (PSDs) of two Seyfert galaxies, the broad line Sey…
Low-Luminosity AGN as analogues of Galactic Black Holes in the low/hard state: Evidence from X-ray timing of NGC 4258
A. Markowitz, P. Uttley
We present a broadband power spectral density function (PSD) measured from extensive RXTE monitoring data of the low-luminosity AGN NGC 4258, which has an accurate, maser-determine…