297 citations · 4.6k across the 139 of their papers we have counts for
7 papers · 1 filter
X-ray absorption variability in NGC 4507
Andrea Marinucci, Guido Risaliti, Junfeng Wang +5
We present a complete spectral analysis of an XMM-Newton and Chandra campaign of the obscured AGN in NGC 4507, consisting of six observations spanning a period of six months, rangi…
An Examination of the Spectral Variability in NGC 1365 with Suzaku
L. W. Brenneman, G. Risaliti, M. Elvis +1
We present jointly analyzed data from three deep Suzaku observations of NGC 1365. These high signal-to-noise spectra enable us to examine the nature of this variable, obscured AGN…
Suzaku observations of 'bare' active galactic nuclei
D. J. Walton, E. Nardini, A. C. Fabian +2
We present a X-ray spectral analysis of a large sample of 25 'bare' active galactic nuclei, sources with little or no complicating intrinsic absorption, observed with Suzaku. Our w…
Analysis of Spitzer-IRS spectra of hyperluminous infrared galaxies
A. Ruiz, G. Risaliti, E. Nardini +2
Hyperluminous infrared galaxies (HLIRG) are the most luminous persistent objects in the Universe. They exhibit extremely high star formation rates, and most of them seem to harbour…
Long XMM observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809: rapid variability, high spin and a soft lag
A. C. Fabian, E. Kara, D. J. Walton +21
Results are presented from a 500ks long XMM-Newton observation of the Narrow-Line Seyfert 1 galaxy IRAS13224-3809. The source is rapidly variable on timescales down to a few 100s.…
Investigating the reflection contribution to the X-ray emission of Ton S180
E. Nardini, A. C. Fabian, D. J. Walton
There is now growing evidence that the soft X-ray excess is almost ubiquitous among unobscured active galaxies. In spite of the various interpretations that have been considered in…