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 …

We summarize what large surveys of the contemporary Universe have taught us about the
physics and phenomenology of the processes that link the formation and evolution of …

Spectroscopy with the James Webb Space Telescope has opened the possibility of
identifying moderate-luminosity active galactic nuclei (AGNs) in the early Universe, at and …

Characterizing the prevalence and properties of faint active galactic nuclei (AGNs) in the
early Universe is key for understanding the formation of supermassive black holes (SMBHs) …

ABSTRACT SDSS J015957. 64+ 003310.5 is an X-ray selected, z= 0.31 active galactic
nucleus (AGN) from the Stripe 82X survey that transitioned from a Type 1 quasar to a Type …

Abstract We analyse Sloan Digital Sky Survey spectra of 568 obscured luminous quasars.
The [O iii] λ5007 Å emission line shows blueshifts and blue excess, indicating that some of …

We study a new population of extremely red objects (EROs) recently discovered by the
James Webb Space Telescope (JWST) based on their NIRCam colors F277W− F444W> 1.5 …

The rare case of changing-look (CL) active galactic nuclei (AGNs), with the appearance or
disappearance of broad Balmer emission lines within a few years, challenges our …

We report on the determination of electron densities, and their impact on the outflow masses
and rates, measured in the central few hundred parsecs of 11 local luminous active …

We study the sudden optical and ultraviolet (UV) brightening of 1ES 1927+ 654, which until
now was known as a narrow-line active galactic nucleus (AGN). 1ES 1927+ 654 was part of …