417 citations · 8.4k across the 123 of their papers we have counts for
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The physical relation between disc and coronal emission in quasars
E. Lusso, G. Risaliti
We propose a modified version of the observed non-linear relation between the X-ray (2 keV) and the ultraviolet (2500 Å) emission in quasars (i.e. )…
A Hubble diagram for quasars
Susanna Bisogni, Guido Risaliti, Elisabeta Lusso
The cosmological model is at present not tested between the redshift of the farthest observed supernovae (z ~ 1.4) and that of the Cosmic Microwave Background (z ~ 1,100). Here we…
EW[OIII] as an orientation indicator for quasars: implications for the torus
Susanna Bisogni, Alessandro Marconi, Guido Risaliti +1
We present an analysis of the average spectral properties of 12,000 SDSS quasars as a function of accretion disc inclination, as measured from the equivalent width of the [O III] 5…
Type 2 AGN host galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching
Hyewon Suh, Francesca Civano, Guenther Hasinger +16
We investigate the star formation properties of a large sample of ~2300 X-ray-selected Type 2 Active Galactic Nuclei (AGNs) host galaxies out to z~3 in the Chandra COSMOS Legacy Su…
Quasars as standard candles I: The physical relation between disc and coronal emission
E. Lusso, G. Risaliti
A tight non-linear relation exists between the X-ray and UV emission in quasars (i.e. ), with a dispersion of 0.2~dex over 3~orders of ma…