activity
19952026
most citedThe Variability of Quasars. II. Frequency Dependence

112 citations · 1.4k across the 56 of their papers we have counts for

collaborators

56 papers

astro-ph.HE2026

Directly tracking the re-brightening of a supermassive black hole accretion disk

R. Middei, E. Nardini, C. Done +12

Accretion onto supermassive black holes powers the most luminous persistent sources in the Universe, the so-called active galactic nuclei, whose emission is characterized by two di…

astro-ph.HE2024★ 15 cited

Investigating the interplay between the coronal properties and the hard X-ray variability of active galactic nuclei with NuSTAR

Roberto Serafinelli, Alessandra De Rosa, Alessia Tortosa +11

Active galactic nuclei (AGN) are extremely variable in the X-ray band down to very short timescales. However, the driver behind the X-ray variability is still poorly understood. Pr…

astro-ph.HE2024★ 11 cited

Investigating the nuclear properties of highly accreting active galactic nuclei with XMM-Newton

M. Laurenti, F. Tombesi, F. Vagnetti +7

Our understanding of highly accreting AGNs is hampered by the lack of a complete systematic investigation in terms of their main spectral and variability properties, and by the rel…

astro-ph.GA2023

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 ().…

astro-ph.HE2023

Tracking the spectral properties across the different epochs in ESO 511-G030

R. Middei, P. -O. Petrucci, S. Bianchi +14

The Type I active galactic nucleus (AGN) ESO 511-G030, a formerly bright and soft-excess dominated source, has been observed in 2019 in the context of a multi-wavelength monitoring…

astro-ph.HE2022★ 19 cited

Hard-X-ray-selected Active Galactic Nuclei -- II. Spectral Energy Distributions in the 5-45 GHz domain

Francesca Panessa, Elia Chiaraluce, Gabriele Bruni +7

A wide-frequency radio study of Active Galactic Nuclei (AGN) is crucial to evaluate the intervening radiative mechanisms responsible for the observed emission and relate them with…