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Changing-look active galactic nuclei
C Ricci, B Trakhtenbrot - Nature Astronomy, 2023 - nature.com
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 …
timescales and across the entire electromagnetic spectrum. Over the past decade, a growing …
Radio galaxies and feedback from AGN jets
MJ Hardcastle, JH Croston - New Astronomy Reviews, 2020 - Elsevier
We review current understanding of the population of radio galaxies and radio-loud quasars
from an observational perspective, focusing on their large-scale structures and dynamics …
from an observational perspective, focusing on their large-scale structures and dynamics …
Active galactic nuclei: what's in a name?
P Padovani, DM Alexander, RJ Assef… - The Astronomy and …, 2017 - Springer
Active galactic nuclei (AGN) are energetic astrophysical sources powered by accretion onto
supermassive black holes in galaxies, and present unique observational signatures that …
supermassive black holes in galaxies, and present unique observational signatures that …
Obscured active galactic nuclei
RC Hickox, DM Alexander - Annual Review of Astronomy and …, 2018 - annualreviews.org
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 …
black hole (SMBH) and are among the most luminous objects in the Universe. However, the …
Revisiting the unified model of active galactic nuclei
H Netzer - Annual Review of Astronomy and Astrophysics, 2015 - annualreviews.org
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 …
nuclei (AGNs). It focuses on new ideas about the origin and properties of the central …
The Galaxy Activity, Torus, and Outflow Survey (GATOS)-I. ALMA images of dusty molecular tori in Seyfert galaxies
S García-Burillo, A Alonso-Herrero, CR Almeida… - Astronomy & …, 2021 - aanda.org
We present the first results of the Galaxy Activity, Torus, and Outflow Survey (GATOS), a
project aimed at understanding the properties of the dusty molecular tori and their …
project aimed at understanding the properties of the dusty molecular tori and their …
What drives the growth of black holes?
DM Alexander, RC Hickox - New Astronomy Reviews, 2012 - Elsevier
Massive black holes (BHs) are at once exotic and yet ubiquitous, residing at the centers of
massive galaxies in the local Universe. Recent years have seen remarkable advances in …
massive galaxies in the local Universe. Recent years have seen remarkable advances in …
AGN dusty tori. II. Observational implications of clumpiness
M Nenkova, MM Sirocky, R Nikutta… - The Astrophysical …, 2008 - iopscience.iop.org
Clumpy torus models with\mathstrut {\cal N} _ {0}\sim 5 {\mbox {--}} 15 dusty clouds along
radial equatorial rays successfully explain AGN infrared observations. The dust has …
radial equatorial rays successfully explain AGN infrared observations. The dust has …
The incidence of obscuration in active galactic nuclei
We study the incidence of nuclear obscuration on a complete sample of 1310 active galactic
nuclei (AGN) selected on the basis of their rest-frame 2–10 keV X-ray flux from the XMM …
nuclei (AGN) selected on the basis of their rest-frame 2–10 keV X-ray flux from the XMM …
A mid-IR selected changing-look quasar and physical scenarios for abrupt AGN fading
We report a new changing-look quasar, WISE J105203. 55+ 151929.5 at z= 0.303, found by
identifying highly mid-IR-variable quasars in the Wide-field Infrared Survey Explorer …
identifying highly mid-IR-variable quasars in the Wide-field Infrared Survey Explorer …