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X-ray source counts in the COSMOS field
N. Cappelluti, G. Hasinger, M. Brusa +13
We present the analysis of the source counts in the XMM-COSMOS survey using data of the first year of XMM-Newton observations. The survey covers ~2 deg^2 within the region of sky b…
Physics and evolution of obscured X-ray sources: a multiwavelength approach
Marcella Brusa
Observations at high energies yield important information on the structure and nature of AGN; when coupled with deep optical and near-infrared (photometric and spectroscopic) follo…
The HELLAS2XMM 1dF survey: on the nature of high X-ray to optical flux ratio sources
F. Fiore, M. Brusa, F. Cocchia +12
We present results from the photometric and spectroscopic identification of 122 X-ray sources discovered by XMM-Newton in the 2-10 keV band (the HELLAS2XMM 1dF sample). One of the…
An XMM-Newton survey of Extremely Red Objects
M. Brusa, A. Comastri, E. Daddi +2
We present preliminary results of a 25 ks XMM-Newton observation of the largest sample of Extremely Red Objects (EROs) available to date (about 450 sources), selected in a contiguo…
On the nature of X-ray Bright Optically Normal galaxies
A. Comastri, M. Brusa, P. Ciliegi +10
Multiwavelength observations of the hard X-ray selected sources by Chandra and XMM-Newton surveys have significantly improved our knowledge of the objects responsible of the hard X…
The contribution of active galaxies to the far-infrared and submillimeter backgrounds
M. Brusa, A. Comastri, C. Vignali
We present a simple model, developed to estimate the contribution of Active Galactic Nuclei to the far--infrared background, closely linked to the AGN synthesis model for the X-ray…