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 …

Abstract The James Webb Space Telescope is revealing a new population of dust-reddened
broad-line active galactic nuclei (AGN) at redshifts z≳ 5. Here we present deep …

MeerKAT's large number (64) of 13.5 m diameter antennas, spanning 8 km with a densely
packed 1 km core, create a powerful instrument for wide-area surveys, with high sensitivity …

We present the first sample of tidal disruption events (TDEs) discovered during the SRG all-
sky survey. These 13 events were selected among X-ray transients detected in the 0°< l< …

This review describes recent developments related to the unified model of active galactic
nuclei (AGNs). It focuses on new ideas about the origin and properties of the central …

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 relative positions of the high and low surface brightness regions of radio-loud active
galaxies in the 3CR sample were found by Fanaroff and Riley to be correlated with their …

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 primary source of emission of active galactic nuclei (AGNs), the accretion disc, is
surrounded by an optically and geometrically thick dusty structure ('the so-called dusty …