Active Galactic Nucleus Quenching in Simulated Dwarf Galaxies
The Astrophysical Journal, 2023 We examine the quenching characteristics of 328 isolated dwarf galaxies $\left({10}^{8}\lt {M}_{\mathrm{star}}/{M}_{\odot }\lt {10}^{10}\right)$ within the Romulus25 cosmological hydrodynamic simulation.
Ray S. Sharma +4 more
doaj +2 more sources
Active galactic nucleus feedback in clusters of galaxies. [PDF]
Proc Natl Acad Sci U S A, 2010 Observations made during the last ten years with the Chandra X-ray Observatory have shed much light on the cooling gas in the centers of clusters of galaxies and the role of active galactic nucleus (AGN) heating. Cooling of the hot intracluster medium in
Blanton EL +4 more
europepmc +3 more sources
Changing-Look AGNs or Short-Lived Radio Sources? [PDF]
Frontiers in Astronomy and Space Sciences, 2017 The evolution of extragalactic radio sources has been a fundamental problem in the study of active galactic nuclei for many years. A standard evolutionary model has been created based on observations of a wide range of radio sources.
Aleksandra Wołowska +3 more
doaj +6 more sources
Extreme properties of a compact and massive accreting black hole host in the first 500 Myr [PDF]
Nature CommunicationsLittle red dots (LRDs) are a high redshift galaxy population. Despite their high number densities, their nature is still uncertain. Here we present CANUCS-LRD-z8.6, a spectroscopically confirmed little red dot at a spectroscopic redshift of z spec = 8 ...
Roberta Tripodi +31 more
doaj +2 more sources
Variabilities Driven by Satellite Black Hole Migration in Active Galactic Nucleus Disks
The Astrophysical JournalThe physical origin of active galactic nucleus (AGN) variability remains unclear. Here we propose that the magnetic reconnection induced by the migration of satellite black holes (sBHs) in the AGN disk can be a new plausible mechanism for AGN short-term ...
Jing-Tong Xing +3 more
doaj +2 more sources
Ionizing Spotlight of Active Galactic Nucleus
Galaxies, 2023 Ionization cones and relativistic jets give us one of the most large-scale example of active galactic nuclei (AGN) influence on the surrounding gas environment in galaxies and beyond.
Alexei V. Moiseev +1 more
doaj +1 more source
X-ray Insight into High-Energy Processes in Extreme Galactic Nuclear Environment
Universe, 2022 Nuclear regions of galaxies apparently play a disproportionately large role in regulating their formation and evolution. How this regulation works, however, remains very uncertain.
Q. Daniel Wang
doaj +1 more source
X-Ray Emission of Ultraviolet Variable Active Galactic Nucleus Candidates
The Astronomical Journal, 2023 We analyze the X-ray properties of a sample of 23 high-probability active galactic nucleus (AGN) candidates with ultraviolet variability identified in Wasleske et al.
Erik J. Wasleske, Vivienne F. Baldassare
doaj +1 more source
Core-collapse Supernova Explosions in Active Galactic Nucleus Accretion Disks
The Astrophysical Journal, 2023 Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium.
Fu-Lin Li +6 more
doaj +1 more source
Black hole variability and the star formation-active galactic nucleus connection : do all star-forming galaxies host an active galactic nucleus? [PDF]
, 2014 We investigate the effect of active galactic nucleus (AGN) variability on the observed connection between star formation and black hole accretion in extragalactic surveys.
Alexander, D.M. +6 more
core +2 more sources