activity
20132026
most citedSensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

135 citations · 1.6k across the 112 of their papers we have counts for

collaborators
Showing astro-ph.GAShow all

12 papers · 1 filter

astro-ph.GA2026

The first near-infrared high-resolution échelle spectroscopy of the outflow in NGC 4151. A study of the clouds covering the Eye of Sauron

Francesco Gabriele Saturni, Riccardo Middei, Hermine Landt +4

We present the first high-resolution near-infrared spectroscopy of the nucleus of the nearby, well-known Seyfert galaxy NGC 4151 (the "Eye of Sauron"). Past studies of this source…

astro-ph.GA2025

XMM/HST monitoring of the ultra-soft highly accreting Narrow Line Seyfert 1 RBS 1332

R. Middei, S. Barnier, F. G. Saturni +10

Ultra-soft narrow line Seyfert 1 (US-NLSy) are a poorly observed class of active galactic nuclei characterized by significant flux changes and an extreme soft X-ray excess. This pe…

astro-ph.GA2021

Capturing dual AGN activity and kiloparsec-scale outflows in IRAS 20210+1121

Francesco Gabriele Saturni, Giustina Vietri, Enrico Piconcelli +8

The most accepted scenario for the evolution of massive galaxies across cosmic time predicts a regulation based on the interplay between AGN feedback, which injects large amounts o…

astro-ph.GA2021★ 11 cited

X-ray obscuration from a variable ionized absorber in PG 1114+445

R. Serafinelli, V. Braito, P. Severgnini +9

Photoionized absorbers of outflowing gas are commonly found in the X-ray spectra of active galactic nuclei (AGN). While most of these absorbers are seldom significantly variable, s…

astro-ph.GA2020★ 15 cited

On self-gravitating strange dark matter halos around galaxies

Marco Merafina, Francesco G. Saturni, Catalina Curceanu +2

A new family of nonrelativistic, Newtonian, non-quantum equilibrium configurations describing galactic halos is introduced, by considering strange quark matter conglomerates with m…

astro-ph.GA2019★ 56 cited

Multiphase quasar-driven outflows in PG 1114+445. I. Entrained ultra-fast outflows

Roberto Serafinelli, Francesco Tombesi, Fausto Vagnetti +3

Substantial evidence in the last few decades suggests that outflows from supermassive black holes (SMBH) may play a significant role in the evolution of galaxies.Large-scale outflo…

astro-ph.GA2018★ 4 cited

"Zombie" or active? An alternative explanation to the properties of star-forming galaxies at high redshift

Francesco Gabriele Saturni, Mattia Mancini, Edwige Pezzulli +1

Star-forming galaxies at high redshift show anomalous values of infrared excess, which can be described only by extremizing the existing relations between the shape of their ultrav…

astro-ph.GA2018★ 15 cited

The rest-frame UV-to-optical spectroscopy of APM 08279+5255 - BAL classification and black hole mass estimates

F. G. Saturni, M. Bischetti, E. Piconcelli +9

We present the analysis of the rest-frame optical-to-UV spectrum of APM 08279+5255, a well-known lensed broad absorption line (BAL) quasar at . The spectroscopic data ar…

astro-ph.GA2015★ 30 cited

A multi-epoch spectroscopic study of the BAL quasar APM 08279+5255 II. Emission- and absorption-line variability time lags

F. G. Saturni, D. Trevese, F. Vagnetti +2

The study of high-redshift bright quasars is crucial to gather information about the history of galaxy assembly and evolution. Variability analyses can provide useful data on the p…

astro-ph.GA2015★ 46 cited

Extinction curve template for intrinsically reddened quasars

Tayyaba Zafar, Palle Møller, Darach Watson +6

We analyze the near-infrared to UV data of 16 quasars with redshifts ranging from 0.71 2.13 to investigate dust extinction properties. The sample presented in this work…

astro-ph.GA2014★ 35 cited

The High A(V) Quasar Survey: Reddened quasi-stellar objects selected from optical/near-infrared photometry - II

J. -K. Krogager, S. Geier, J. P. U. Fynbo +9

Quasi-stellar objects (QSOs) whose spectral energy distributions (SEDs) are reddened by dust either in their host galaxies or in intervening absorber galaxies are to a large degree…

astro-ph.GA2014★ 39 cited

CIV and CIII] reverberation mapping of the luminous quasar PG 1247+267

D. Trevese, M. Perna, F. Vagnetti +2

So far the masses of about 50 active galactic nuclei have been measured through the reverberation mapping technique (RM). Most measurements have been performed for objects of moder…