37 citations · 94 across the 17 of their papers we have counts for
18 papers
Super-Eddington Accretion and Early-Stage Feedback in Ton S180
Pierpaolo Condò, Giacomo Venturi, Eleonora Parlanti +15
Narrow-line Seyfert 1 (NLSy1) galaxies are key laboratories for studying rapid supermassive black hole (SMBH) growth and active galactic nucleus (AGN) feedback at high accretion ra…
Investigating the origin of radio emission in candidate super-Eddington accreting black holes
Marie-Lou Gendron-Marsolais, Paola Marziani, Marco Berton +8
Recent works show that the radio power of quasars accreting at very high rates can reach surprisingly high values. These studies suggest that this radio emission might originate fr…
NOCTURNE. I. The radio spectrum of narrow-line Seyfert 1 galaxies
M. Berton, E. Järvelä, S. Chen +8
The origin of the radio emission in active galactic nuclei (AGN) is still debated. Multiple physical mechanisms can contribute to the spectrum at these frequencies, including relat…
Insights into jet-NLR energetics in PMN J0948+0022
B. Dalla Barba, L. Foschini, M. Berton +8
The analysis of the optical spectra of PMN J0948+0022 showed significant variations in the spectral lines that, when combined with the Fermi -ray light curve and radio observati…
Revised optical classification of a sample of gamma-ray emitting AGN with GTC and VLT
B. Dalla Barba, L. Foschini, M. Berton +10
We report the results of the optical follow-up of a sample of -ray-emitting active galactic nuclei (AGN). New high-quality optical spectra were obtained using Gran Telescopio Ca…
Interaction of the relativistic jet and the narrow-line region of PMN J0948+0022
B. Dalla Barba, M. Berton, L. Foschini +6
We have analyzed publicly available optical spectra of PMN J0948+0022 obtained with the Sloan Digital Sky Survey, X-Shooter, and the Multi Unit Spectroscopic Explorer (MUSE). Initi…
An optical perspective on early-stage AGN with extreme radio flares
Luca Crepaldi, Marco Berton, Benedetta Dalla Barba +4
In the last decade of Active Galactic Nuclei (AGN) monitoring programs, the Metsähovi Radio Observatory detected multiple times seven powerful flaring narrow-line Seyfert 1 (NLS1)…
The host galaxy of low-luminosity compact sources
A. Vietri, M. Berton, E. Järvelä +6
The term 'active galactic nuclei' (AGN) subtends a huge variety of objects, classified on their properties at different wavelengths. Peaked sources (PS) represent a class of AGN at…
X-ray properties of two complementary samples of intermediate Seyfert galaxies
Benedetta Dalla Barba, Luigi Foschini, Marco Berton +2
We present the X-ray spectral analysis of two complementary sets of intermediate Seyfert galaxies (ISs). Analyzing X-ray data, we estimate the hydrogen abundance and test its…
A large jet narrow-line Seyfert 1 galaxy: observations from pc to 100 kpc scales
Sina Chen, Preeti Kharb, Silpa Sasikumar +11
We present new 1.5-8.5 GHz Very Long Baseline Array (VLBA) observations and 0.32-1.26 GHz Giant Meterwave Radio Telescope (GMRT) observations of J0354-1340, which is the only known…
Polarimetric Reverberation Mapping in Medium-Band Filters
Elena Shablovinskaya, Luka Č. Popović, Roman Uklein +8
Earlier, we suggested the "reload" concept of the polarimetric reverberation mapping of active galactic nuclei (AGN), proposed for the first time more than 10 years ago. We have su…
Unravelling the origin of extended radio emission in narrow-line Seyfert 1 galaxies with the JVLA
Emilia Järvelä, Rohan Dahale, Luca Crepaldi +3
Narrow-line Seyfert 1 (NLS1) galaxies are believed to be active galactic nuclei (AGN) in the early stages of their evolution. Some dozens of them have been found to host relativist…
Narrow-line Seyfert 1 galaxies with absorbed jets -- insights from radio spectral index maps
Emilia Järvelä, Marco Berton, Luca Crepaldi
Narrow-line Seyfert 1 (NLS1) galaxies are active galactic nuclei (AGN) believed to be in the early stages of their evolution. A fraction of them have been found to host relativisti…
Hunting for the nature of the enigmatic narrow-line Seyfert 1 galaxy PKS 2004-447
M. Berton, G. Peluso, P. Marziani +19
Narrow-line Seyfert 1 (NLS1) galaxies are a class of active galactic nuclei (AGN) that, in some cases, can harbor powerful relativistic jets. One of them, PKS 2004-447, shows gamma…
The Radio Structure of the Narrow-Line Seyfert 1 Mrk 783 with VLBA and e-MERLIN
E. Congiu, P. Kharb, A. Tarchi +9
In this paper, we present the analysis of new radio and optical observations of the narrow-line Seyfert 1 galaxy Mrk 783. 1.6 GHz observations performed with the e-MERLIN interfero…
The Energetics of Launching the Most Powerful Jets in Quasars: A Study of 3C82
Brian Punsly, Gary J. Hill, Paola Marziani +5
3C 82 at a redshift of 2.87 is the most distant 3C (Third Cambridge Catalogue) quasar. Thus, it is a strong candidate to have the most luminous radio lobes in the Universe. 3C 82 b…
Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
S. Chen, E. Jarvela, L. Crepaldi +8
We present the results of new radio observations carried out with the Karl G. Jansky Very Large Array C-configuration at 5.5 GHz for a sample of southern narrow-line Seyfert 1 gala…
Absorbed relativistic jets in radio-quiet narrow-line Seyfert 1 galaxies
M. Berton, E. Järvelä, L. Crepaldi +6
Narrow-line Seyfert 1 (NLS1) galaxies are peculiar active galactic nuclei (AGN). Most of them do not show strong radio emission, but recently seven radio-quiet (or -silent) NLS1s h…