625 citations · 705 across the 5 of their papers we have counts for
10 papers
An XMM-Newton survey of broad iron lines in Seyfert galaxies
K. Nandra, P. M. O'Neill, I. M. George +1
We present an analysis of the X-ray spectra of a sample of 37 observations of 26 Seyfert galaxies observed by XMM-Newton in order to characterize their iron K emission. All objects…
On the relativistic iron line and soft excess in the Seyfert 1 galaxy Markarian 335
Paul M. O'Neill, Kirpal Nandra, Massimo Cappi +2
We report on a 133 ks XMM-Newton observation of the Seyfert 1 galaxy Markarian 335. The 0.4-12 keV spectrum contains an underlying power law continuum, a soft excess below 2 keV, a…
A Multicoloured View of 2S 0114+650
S. A. Farrell, P. M. O'Neill, R. K. Sood +2
We report the results of radio and X-ray observations of the high mass X-ray binary 2S 0114+650, made with the Giant Meterwave Radio Telescope and the Rossi X-ray Timing Explorer r…
Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. III. Optical Variability and X-ray/UV/Optical Correlations
Louis-Benoit Desroches, Alexei V. Filippenko, Shai Kaspi +11
We present optical observations of the low-luminosity Seyfert 1 nucleus of NGC 4395, as part of a multiwavelength reverberation-mapping program. Observations were carried out over…
Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. II. X-ray and Ultraviolet Continuum Variability
Paul M. O'Neill, Shai Kaspi, Ari Laor +7
We report on two Chandra observations, and a simultaneous Hubble Space Telescope ultraviolet observation, of the dwarf Seyfert 1 galaxy NGC 4395. Each Chandra observation had a dur…
On the origin of the X-ray emission towards the early Herbig Be star MWC 297
Jorick S. Vink, Paul M. O'Neill, Sebastian G. Els +1
We present high resolution AO-corrected coronographic near-infrared imaging on the early-type Herbig Be star MWC 297. X-ray flaring has been reported towards this young object, how…