79 citations · 785 across the 29 of their papers we have counts for
30 papers · 1 filter
The optically elusive, changing-look active nucleus in NGC 4156
Giulia Tozzi, Elisabeta Lusso, Lapo Casetti +21
We report on the changing-look nature of the active galactic nucleus (AGN) in the galaxy NGC 4156, as serendipitously discovered thanks to data acquired in 2019 at the Telescopio N…
The most luminous blue quasars at 3.0<z<3.3. II. CIV/X-ray emission and accretion disc physics
Elisabeta Lusso, Emanuele Nardini, Susanna Bisogni +12
We analyse the properties of the CIV broad emission line in connection with the X-ray emission of 30 bright SDSS quasars at z~3.0-3.3 with pointed XMM-Newton observations, which we…
The role of SPICA-like missions and the Origins Space Telescope in the quest for heavily obscured AGN and synergies with Athena
L. Barchiesi, F. Pozzi, C. Vignali +21
In the BH-galaxy co-evolution framework, most of the star-formation (SF) and the black hole (BH) accretion is expected to take place in highly obscured conditions. Thus, obscured A…
MUSE Analysis of Gas around Galaxies (MAGG) -- III: The gas and galaxy environment of z = 3-4.5 quasars
Matteo Fossati, Michele Fumagalli, Emma K. Lofthouse +9
We present a study of the environment of 27 z=3-4.5 bright quasars from the MUSE Analysis of Gas around Galaxies (MAGG) survey. With medium-depth MUSE observations (4 hours on targ…
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…