Active galactic nuclei (AGN) are energetic astrophysical sources powered by accretion onto
supermassive black holes in galaxies, and present unique observational signatures that …

Active galactic nuclei (AGN) are powered by the accretion of material onto a supermassive
black hole (SMBH) and are among the most luminous objects in the Universe. However, the …

We present the active galactic nucleus (AGN) catalog and optical spectroscopy for the
second data release of the Swift BAT AGN Spectroscopic Survey (BASS DR2). With this DR2 …

Hard X-ray (≥ 10 keV) observations of active galactic nuclei (AGNs) can shed light on some
of the most obscured episodes of accretion onto supermassive black holes. The 70-month …

The material surrounding accreting supermassive black holes connects the active galactic
nucleus with its host galaxy and, besides being responsible for feeding the black hole …

We present the first catalog and data release of the Swift-BAT AGN Spectroscopic Survey.
We analyze optical spectra of the majority of the detected AGNs (77%, 642/836) based on …

The majority of the accreting supermassive black holes in the Universe are obscured by
large columns of gas and dust,,. The location and evolution of this obscuring material have …

The question of whether galaxy mergers are linked to the triggering of active galactic nuclei
(AGN) continues to be a topic of considerable debate. The issue can be broken down into …

Mergers of galaxies are thought to cause significant gas inflows to the inner parsecs, which
can activate rapid accretion on to supermassive black holes (SMBHs), giving rise to active …

Abstract The BAT AGN Spectroscopic Survey (BASS) is designed to provide a highly
complete census of the key physical parameters of the supermassive black holes (SMBHs) …