8 papers · 1 filter
The South Pole Telescope AGN Monitoring Campaign: First Release of SPTpol Bright AGN Light Curves
J. C. Hood, P. A. R. Ade, A. J. Anderson +66
The South Pole Telescope (SPT) collaboration has recently embarked upon a campaign to monitor the brightness of a sample of active galactic nuclei (AGN), both in real time and in a…
NOCTURNE. III. Unidentified variable emission in the nuclear regions of PKS 2153-69
Miguel Coloma Puga, Marco Berton, Pierpaolo Condò +4
Historically, the study of the central regions of Type 1 AGN has been limited by the combination of the host galaxy spectrum with strong emission from the accretion disk and NLR/BL…
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…
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 C…
A comprehensive radio study of narrow-line Seyfert 1 galaxies
I. Varglund, E. Järvelä, M. J. Hardcastle +2
Narrow-line Seyfert 1 (NLS1) galaxies are a type of active galactic nuclei (AGN) that were originally classified as sources with little to no radio emission. Although the class is…
How similar are narrow-line Seyfert 1 galaxies and high-z type 1 AGN?
M. Berton, E. Järvelä, A. Tortosa +1
The recent observations of highly accreting supermassive black holes (SMBH) at very high redshift (4) with the James Webb Space Telescope (JWST) allowed us to shed light for the…