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X-rays from the High-Redshift Universe: The Chandra view
C. Vignali, W. N. Brandt, D. P. Schneider +4
The study of the X-ray properties of z>4 quasars has grown substantially over the last few years, mostly thanks to Chandra. Here we focus on (1) the average X-ray properties of an…
BeppoSAX/PDS identification of the true counterpart of the Piccinotti source H0917-074
A. Malizia, G. Malaguti, L. Bassani +5
High energy emission has been discovered serendipitously by the BeppoSAX/PDS telescope in the ~1.3 degree field of view around the Piccinotti source H0917-074. A re-pointing of Bep…
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 Chandra Deep Field North Survey. XI. X-ray emission from luminous infrared starburst galaxies
D. M. Alexander, H. Aussel, F. E. Bauer +5
Using the 1 Ms Chandra Deep Field North and 15 micron ISOCAM HDF-N surveys we find a tight correlation between the population of strongly evolving starbursts discovered in faint 15…
The HELLAS2XMM survey: II. Multiwavelength observations of P3: an X-ray bright, optically inactive galaxy
A. Comastri, M. Mignoli, P. Ciliegi +11
Recent X-ray surveys have clearly demonstrated that a population of optically dull, X-ray bright galaxies is emerging at 2-10 keV fluxes of the order of 10^{-14} erg cm^{-2} s^{-1}…