43 citations · 143 across the 10 of their papers we have counts for
5 papers · 1 filter
The WISSH quasar project. XII. X-ray view of the most luminous quasi-stellar objects at Cosmic Noon
C. Degli Agosti, C. Vignali, E. Piconcelli +25
To improve our knowledge of nuclear emission in luminous QSOs at Cosmic Noon, we studied the X-ray emission of the WISE/SDSS-selected hyper-luminous (WISSH) QSO sample: 85 broad-li…
HYPerluminous quasars at the Epoch of ReionizatION (HYPERION). A new regime for the X-ray nuclear properties of the first quasars
L. Zappacosta, E. Piconcelli, F. Fiore +40
The existence of luminous quasars (QSO) at the Epoch of Reionization (EoR; i.e. z>6) powered by supermassive black holes (SMBH) with masses challenges models…
X-HESS: a large sample of highly accreting serendipitous AGN under the XMM-Newton microscope
M. Laurenti, F. Tombesi, F. Vagnetti +3
The bulk of X-ray spectroscopic studies of active galactic nuclei (AGN) are focused on local () sources with low-to-moderate () Eddington ratio ().…
X-ray spectroscopic survey of highly-accreting AGN
M. Laurenti, E. Piconcelli, L. Zappacosta +14
Improving our understanding of the nuclear properties of high-Eddington ratio () active galactic nuclei (AGN) is necessary since the bulk of X-ray spectroscopic stu…
Individual optical variability of Active Galactic Nuclei from the MEXSAS2 sample
M. Laurenti, F. Vagnetti, R. Middei +1
Most of the variability studies of active galactic nuclei (AGNs) are based on ensemble analyses. Nevertheless, it is interesting to provide estimates of the individual variability…