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The most luminous blue quasars at . I. A tale of two X-ray populations
E. Nardini, E. Lusso, G. Risaliti +8
(abridged) We present the X-ray analysis of a sample of 30 luminous quasars at with deep XMM-Newton observations, selected from the SDSS-DR7 to be representative o…
Quasars as standard candles II: The non linear relation between UV and X-ray emission at high redshifts
Francesco Salvestrini, Guido Risaliti, Susanna Bisogni +2
A tight non-linear relation between the X-ray and the optical-ultraviolet (UV) emission has been observed in Active Galactic Nuclei (AGN) over a wide range of redshift and several…
Increasing the Discovery Space in Astrophysics - A Collation of Six Submitted White Papers
G. Fabbiano, M. Elvis, A. Accomazzi +46
We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We p…
Orientation effects on the near-infrared broad band emission of quasars
Susanna Bisogni, Elisabeta Lusso, Alessandro Marconi +1
We recently proposed the equivalent width (EW) of the narrow [OIII]5007Å emission line as an orientation indicator for active galactic nuclei. We tested this method on about $12,30…