658 citations · 9.5k across the 195 of their papers we have counts for
9 papers · 2 filters
The XMM-Newton HBS28 sample: studying the obscuration in hard X-ray selected AGNs
A. Caccianiga, P. Severgnini, V. Braito +8
This paper presents the analysis of a statistically complete sample of 28 serendipitous X-ray sources selected in 82 pointed XMM-Newton fields down to a count-rate of 0.002 counts…
The TESIS project: Are type 2 QSO hidden in X-ray emitting EROs?
P. Severgnini, R. Della Ceca, V. Braito +8
Here we present the results obtained from the analysis of 75 ksec of XMM-Newton observations of a sample of EROs selected from one MUNICS field (K'<19.5 mag). We find 6 EROs with a…
The TESIS project: revealing massive early-type galaxies at z>1
P. Saracco, M. Longhetti, P. Severgnini +8
We present the preliminary results of an on-going near-IR low resolution spectroscopic follow-up of a complete sample of 30 bright (K'<18.5) EROs selected over 360 arcmin^2 from th…
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…
The Ultra Luminous Infrared Galaxy MKN 231: New clues from BeppoSAX and XMM-Newton
V. Braito, R. Della Ceca, E. Piconcelli +11
We present BeppoSAX and XMM-Newton observations of MKN 231. These observations and in particular the BeppoSAX PDS data allowed us to unveil, for the first time, the highly absorbed…
Arp 299: a second merging system with two active nuclei?
L. Ballo, V. Braito, R. Della Ceca +3
Recent BeppoSAX observations of Arp 299, a powerful far-IR merging starburst system composed of IC 694 and NGC 3690, clearly unveiled for the first time in this system the presence…
A Hard Medium Survey with ASCA. IV: the Radio-Loud Type 2 QSO AXJ0843+294 2
R. Della Ceca, V. Braito, V. Beckmann +6
We discuss the X-ray, optical and radio properties of AX J0843+2942, a high luminosity Type 2 AGN found in the ASCA Hard Serendipitous Survey. The X-ray spectrum is best described…
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…
XMM-Newton observations expose AGN in apparently normal galaxies
P. Severgnini, A. Caccianiga, V. Braito +12
We have performed a detailed analysis of 3 optically normal galaxies extracted from the XMM Bright Serendipitous Source Sample. Thanks to the good statistics of the XMM-Newton data…