Results 1 to 10 of about 90,767 (300)
Ionizing Spotlight of Active Galactic Nucleus [PDF]
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 +4 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 cluster centers can feed the supermassive black holes found in the nuclei of the dominant cluster ...
Blanton EL +4 more
europepmc +7 more sources
Active Galactic Nucleus Quenching in Simulated Dwarf Galaxies [PDF]
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 +3 more sources
Active galactic nucleus jet feedback in hydrostatic halos [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 Feedback driven by jets from active galactic nuclei is believed to be responsible for reducing cooling flows in cool-core galaxy clusters. We use simulations to model feedback from hydrodynamic jets in isolated halos.
R. Weinberger +10 more
semanticscholar +4 more sources
Magnetohydrodynamics Simulations of Active Galactic Nucleus Disks and Jets [PDF]
Annual Review of Astronomy and Astrophysics, 2020 There is a broad consensus that accretion onto supermassive black holes and consequent jet formation power the observed emission from active galactic nuclei (AGNs).
S. Davis, Alexander Tchekhovskoy
semanticscholar +4 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
Extreme variability in an active galactic nucleus: Gaia16aax [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 We present the results of a multiwavelength follow-up campaign for the luminous nuclear transient Gaia16aax, which was first identified in 2016 January.
G. Cannizzaro +14 more
semanticscholar +8 more sources
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 +3 more sources
Cosmological Evolution of the Hard X-Ray Active Galactic Nucleus Luminosity Function and the Origin of the Hard X-Ray Background [PDF]
The Astrophysical Journal, 2003 We investigate the cosmological evolution of the hard X-ray luminosity function (HXLF) of active galactic nuclei (AGNs) in the 2-10 keV luminosity range of 1041.5-1046.5 ergs s-1 as a function of redshift up to 3.
Y. Ueda, M. Akiyama, K. Ohta, T. Miyaji
semanticscholar +2 more sources
Decomposition of active galactic nucleus host galaxy images [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 We describe an algorithm to decompose deep images of active galactic nuclei into host galaxy and nuclear components. Currently supported are three galaxy models: a de Vaucouleurs spheroidal; an exponential disc; and a two-component disc + bulge model. Key features of the method are: (semi-)analytic representation of a possibly spatially variable point ...
B. Kuhlbrodt, L. Wisotzki, K. Jahnkę
openalex +4 more sources