1.5k citations · 14.1k across the 183 of their papers we have counts for
5 papers · 2 filters
Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
A. Marconi, G. Risaliti, R. Gilli +3
We quantify the importance of mass accretion during AGN phases in the growth of supermassive black holes (BH) by comparing the mass function of black holes in the local universe wi…
Revealing the active galactic nucleus in the superantennae through L-band spectroscopy
G. Risaliti, R. Maiolino, A. Marconi +6
We present an L-band spectrum of the Ultraluminous Infrared Galaxy IRAS 19254-7245 (the Superantennae), obtained with VLT-ISAAC. The high signal to noise ratio allows a study of th…
An XMM-Newton hard X-ray survey of ULIRGs
A. Franceschini, V. Braito, M. Persic +8
XMM-Newton observations of 10 ULIRGs are reported. The aim is to investigate in hard X-rays a complete ULIRG sample selected from the bright IRAS 60m catalogue. All sources are…
Chandra observations of X-ray weak Quasars
G. Risaliti, M. Elvis, R. Gilli +1
We present Chandra observations of 18 spectroscopically selected quasars, already known to be X-ray weak from previous ROSAT observations. All the sources but one are detected by C…
The nature of the absorbing torus in compact Radio Galaxies
G. Risaliti, L. Woltjer, M. Salvati
We present BeppoSAX observations of the two radio galaxies PKS 1934-63 and S5 1946+708. Strong Iron Kalpha lines are detected in both objects indicating that the two sources are ab…