112 citations · 1.4k across the 56 of their papers we have counts for
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Ensemble X-ray variability of Active Galactic Nuclei. II. Excess Variance and updated Structure Function
F. Vagnetti, R. Middei, M. Antonucci +2
Most investigations of the X-ray variability of active galactic nuclei (AGN) have been concentrated on the detailed analyses of individual, nearby sources. A relatively small numbe…
NuSTAR reveals the extreme properties of the super-Eddington accreting SMBH in PG 1247+267
G. Lanzuisi, M. Perna, A. Comastri +26
PG1247+267 is one of the most luminous known quasars at and is a strongly super-Eddington accreting SMBH candidate. We obtained NuSTAR data of this intriguing source in De…
Ensemble spectral variability study of Active Galactic Nuclei from the XMM-Newton serendipitous source catalogue
Roberto Serafinelli, Fausto Vagnetti, Riccardo Middei
The variability of the X-ray spectra of active galactic nuclei (AGN) usually includes a change of the spectral slope. This has been investigated for a small sample of local AGNs by…