Results 1 to 10 of about 38,366 (276)
Unmasking the Active Galactic Nucleus in PKS J2310-437 [PDF]
The Astrophysical Journal, 2009 PKS J2310-437 is an AGN with bright X-ray emission relative to its weak radio emission and optical continuum. It is believed that its jet lies far enough from the line of sight that it is not highly relativistically beamed.
A. F. Bliss +10 more
core +5 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 +3 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 +5 more sources
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
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
Chandra unveils a binary Active Galactic Nucleus in Mrk463 [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 We analyse Chandra, XMM-Newton and HST data of the double-nucleus Ultraluminous Infrared Galaxy (ULIRG), Mrk463. The Chandra detection of two luminous ($\mathrm{L}_\mathrm{2-10 keV}=1.5\times10^{43}$ and $3.8\times10^{42}$ erg cm$^{-2}$ s$^{-1 ...
Alonso-Herrero +45 more
core +2 more sources
X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81* [PDF]
The Astrophysical Journal, 2023 Most active galactic nuclei at the center of the nearby galaxies have supermassive black holes accreting at sub-Eddington rates through hot accretion flows or radiatively inefficient accretion flows, which efficiently produce jets.
Gunjan Tomar, Nayantara Gupta
doaj +2 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
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
The Contribution of Turbulent Active Galactic Nucleus Coronae to the Diffuse Neutrino Flux
The Astrophysical JournalActive galactic nuclei (AGN) can accelerate protons to energies of ∼10–100 TeV, with secondary production of high-energy neutrinos. If the acceleration is driven by magnetized turbulence, the main properties of the resulting proton and neutrino spectra ...
Damiano F. G. Fiorillo +4 more
doaj +2 more sources