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XMM-Newton observations of ULIRGs I: A Compton-thick AGN in IRAS19254-7245
V. Braito, A. Franceschini, R. Della Ceca +8
We present the XMM-Newton observation of the merging system IRAS 19254-7245, also known as The Superantennae, whose southern nucleus is classified as a Seyfert 2 galaxy. The XMM-Ne…
Ubiquitous column density variability in Seyfert 2 Galaxies
G. Risaliti, M. Elvis, F. Nicastro
We present a study of X-ray column density variability in Seyfert 2 galaxies. We show that variations in N_H are observed in almost all the objects with multiple hard X-ray observa…
An XMM-Newton Survey of Ultra-Luminous Infrared Galaxies
V. Braito, A. Franceschini, R. Della Ceca +8
We present preliminary results of XMM-Newton observations of 5 Ultra-luminous Infrared Galaxies (ULIRGs), part of a mini-survey program dedicated to 10 ULIRGs selected from the bri…