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 …

Active galactic nuclei (AGNs) are known to show flux variability over all observable
timescales and across the entire electromagnetic spectrum. Over the past decade, a growing …

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 quest for binary and dual supermassive black holes (SMBHs) at the dawn of the multi-
messenger era is compelling. Detecting dual active galactic nuclei (AGN)–active SMBHs at …

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 …

Collisions and interactions between gas-rich galaxies are thought to be pivotal stages in
their formation and evolution, causing the rapid production of new stars, and possibly …

We study the relation between obscuration and supermassive black hole (SMBH) accretion
using a large sample of hard X-ray selected active galactic nuclei (AGNs). We find a strong …

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 …

The role of galaxy mergers in fuelling active galactic nuclei (AGNs) is still debated, owing
partly to selection effects inherent to studies of the merger/AGN connection. In particular …

As matter accretes onto the central supermassive black holes in active galactic nuclei
(AGNs), X-rays are emitted. We present a population synthesis model that accounts for the …