Results 21 to 30 of about 122,679 (291)
Ionized outflows from active galactic nuclei as the essential elements of feedback [PDF]
, 2020 Outflows from active galactic nuclei (AGNs) are one of the fundamental mechanisms by which the central supermassive black hole interacts with its host galaxy. Detected in ≥50% of nearby AGNs, these outflows have been found to carry kinetic energy that is
S. Laha +7 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 The sampling strategy of the Transiting Exoplanet Survey Satellite (TESS) makes TESS light curves extremely valuable for investigating the high cadence optical variability of active galactic nuclei (AGN).
Krista Lynne Smith, Lia F. Sartori
doaj +1 more source
The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colour [PDF]
, 2005 We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the concordance A cold dark matter cosmogony.
D. Croton +9 more
semanticscholar +1 more source
Investigation of Stellar Kinematics and Ionized Gas Outflows in Local (U)LIRGs
The Astrophysical Journal, 2023 We explore the properties of stellar kinematics and ionized gas in a sample of 1106 local (U)LIRGs from the AKARI telescope. We combine data from Wide-field Infrared Survey Explorer and Sloan Digital Sky Survey Data Release 13 to fit the spectral energy ...
Ashraf Ayubinia +6 more
doaj +1 more source
Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei [PDF]
, 1999 Correlated variations in the line and continuum emission from active galactic nuclei (AGNs) can be used to determine the size and geometry of the broad emission-line regions (BLRs).
S. Kaspi +5 more
semanticscholar +1 more source
NuSTAR Observations of a Heavily X-Ray-obscured AGN in the Dwarf Galaxy J144013+024744
The Astrophysical Journal, 2023 We present a multiwavelength analysis of the dwarf Seyfert 2 galaxy J144013+024744, a candidate obscured active galactic nucleus (AGN) thought to be powered by an intermediate-mass black hole (IMBH, M _• ≈ 10 ^4 −10 ^6 M _⊙ ) of mass M _• ∼ 10 ^5.2 M _⊙ .
Shrey Ansh +12 more
doaj +1 more source
Relativistic Jets from Active Galactic Nuclei [PDF]
Annual Review of Astronomy and Astrophysics, 2018 The nuclei of most normal galaxies contain supermassive black holes, which can accrete gas through a disk and become active. These active galactic nuclei (AGNs) can form jets that are observed on scales from astronomical units to megaparsecs and from ...
R. Blandford, D. Meier, A. Readhead
semanticscholar +1 more source
The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope [PDF]
Astrophysical Journal, 2019 The fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Gamma-ray Space Telescope Large Area Telescope (4LAC) between 2008 August 4 and 2016 August 2 contains objects located at high Galactic latitudes ( ).
M. Ajello +117 more
semanticscholar +1 more source
Universal bolometric corrections for active galactic nuclei over seven luminosity decades [PDF]
Astronomy & Astrophysics, 2020 Context. The AGN bolometric correction is a key element for understanding black hole (BH) demographics and computing accurate BH accretion histories from AGN luminosities.
F. Duras +14 more
semanticscholar +1 more source
Evolution of Active Galactic Nuclei [PDF]
, 2013 [Abriged] Supermassive black holes (SMBH) lurk in the nuclei of most massive galaxies, perhaps in all of them. The tight observed scaling relations between SMBH masses and structural properties of their host spheroids likely indicate that the processes fostering the growth of both components are physically linked, despite the many orders of magnitude ...
Andrea Merloni, Sebastian Heinz
openaire +3 more sources