417 citations · 8.4k across the 123 of their papers we have counts for
10 papers · 1 filter
Investigating Dark Energy Equation of State With High Redshift Hubble Diagram
Marek Demianski, Elisabeta Lusso, Maurizio Paolillo +2
Several independent cosmological data, collected within the last twenty years, revealed the accelerated expansion rate of the Universe, usually assumed to be driven by the so calle…
Quasars as standard candles III. Validation of a new sample for cosmological studies
E. Lusso, G. Risaliti, E. Nardini +15
We present a new catalogue of ~2,400 optically selected quasars with spectroscopic redshifts and X-ray observations from either Chandra or XMM-Newton. The sample can be used to inv…
X-ray Observations of a [C II]-bright, z=6.59 Quasar/Companion System
Thomas Connor, Eduardo Bañados, Chiara Mazzucchelli +7
We present deep Chandra observations of PSO J231.657620.8335, a quasar at redshift z=6.59 with a nearby ( proper kpc) companion galaxy. ALMA observed both the quasar an…
The first broadband X-ray view of the narrow line Seyfert 1 Ton S180
G. A. Matzeu, E. Nardini, M. L. Parker +15
We present joint \textit{XMM-Newton} and \textit{NuSTAR} observations of the `bare' narrow line Seyfert 1 Ton S180 (), carried out in 2016 and providing the first hard X-r…
Examining supernova events in Type 1 active galactic nuclei
Beatriz Villarroel, Iñigo Imaz, Elisabeta Lusso +4
A statistical study of intermediate Palomar Transient Factory supernovae (SNe) in Type 1 AGN has shown a major deficit of supernovae around Type 1 AGN host galaxies, with respect t…
Fundamental differences in the radio properties of red and blue quasars: enhanced compact AGN emission in red quasars
V. A. Fawcett, D. M. Alexander, D. J. Rosario +5
We have recently used the Faint Images of the Radio Sky at Twenty-centimeters (FIRST) survey to show that red quasars have fundamentally different radio properties to typical blue…
Fundamental differences in the radio properties of red and blue quasars: Insight from the LOFAR Two-metre Sky Survey (LoTSS)
D. J. Rosario, V. A. Fawcett, L. Klindt +5
Red quasi-stellar objects (QSOs) are a subset of the luminous end of the cosmic population of active galactic nuclei (AGN), most of which are reddened by intervening dust along the…
Cosmology with quasars: predictions for eROSITA from a quasar Hubble diagram
Elisabeta Lusso
Our group has developed a technique that makes use of the observed non-linear relation between the ultraviolet and the X-ray luminosity in quasars to provide an independent measure…
Universal bolometric corrections for AGN over 7 luminosity decades
F. Duras, A. Bongiorno, F. Ricci +12
The AGN bolometric correction is a key element to understand BH demographics and compute accurate BH accretion histories from AGN luminosities. However, current estimates still dif…
The Quest for Dual and Binary Supermassive Black Holes: A Multi-Messenger View
Alessandra De Rosa, Cristian Vignali, Tamara Bogdanović +27
The quest for binary and dual supermassive black holes (SMBHs) at the dawn of the multi-messenger era is compelling. Detecting dual active galactic nuclei (AGN) -- active SMBHs at…