5 papers · 1 filter
Enhanced activity in close dual-AGN systems in the local Universe
Lorenzo Battistini, Alessandra De Rosa, Paola Severgnini +16
We present the study of an X-ray selected sample of active galactic nuclei (AGN) in pairs at projected spatial separations 1 </kpc < 100 at z < 0.1, using XMM-Newton and Chan…
Variability in the supermassive black hole binary candidate SDSS J2320+0024: No evidence of periodic modulation
Fabio Rigamonti, Lorenzo Bertassi, Riccardo Buscicchio +5
Supermassive black hole binaries (SBHBs) are a natural outcome of galaxy mergers, and they are expected to be among the loudest gravitational-wave sources at low frequencies. The s…
X-ray investigation of possible super-Eddington accretion in a radio-loud quasar at
L. Ighina, A. Caccianiga, T. Connor +19
We present radio and X-ray observations of the recently discovered radio-powerful quasar RACS J032021.44352104.1 using uGMRT, ATCA, LBA, and Chandra. The observed radio…
ESPRESSO reveals a single but perturbed broad-line region in the supermassive black hole binary candidate PG 1302-102
Fabio Rigamonti, Paola Severgnini, Erika Sottocorno +12
We present a new, Bayesian analysis of the highest-resolution optical spectrum of the supermassive black hole (SMBH) binary candidate PG 1302-102, obtained with ESPRESSO@VLT (R \si…
SDSS J222428.53+261423.2: unique emission lines properties unveil a sub-kiloparsec dual AGN candidate
Qi Zheng, XueGuang Zhang, QiRong Yuan +2
In this paper, we presented a detailed analysis of the Sloan Digital Sky Survey optical spectrum of a new sub-kpc scale dual AGN candidate SDSS J222428.53+261423.2 (=SDSS J2224). T…