Mass of the active galactic nucleus black hole XMMUJ134736.6+173403 [PDF]
Astronomy & Astrophysics, 2019 A recent study of the X-ray source XMMUJ134736.6+173403 has revealed a strong quasi-periodic modulation in the X-ray flux. The observation of two quasiperiodic oscillations (QPOs) that occur on a daily timescale and exhibit a 3:1 frequency ratio strongly supports the evidence for the presence of an active galactic nucleus black hole (AGN BH).
Goluchová, K. +5 more
openaire +4 more sources
Enhanced Black Hole Mergers in Active Galactic Nucleus Disks due to Precession-induced Resonances
The Astrophysical Journal, 2023 Recent studies have shown that active galactic nucleus (AGN) disks can host sources of gravitational waves. Compact binaries can form and merge in AGN disks through their interactions with the gas and other compact objects in the disk.
Hareesh Gautham Bhaskar +2 more
doaj +1 more source
New Conformally Invariant Born–Infeld Models and Geometrical Currents
PhysicsA new conformally invariant gravitational generalization of the Born–Infeld (BI) model is proposed and analyzed from the point of view of symmetries. Taking a geometric identity involving the determinant functions detfBμν, Fμν with the Bach Bμν and the ...
Diego Julio Cirilo-Lombardo
doaj +1 more source
Dissecting the active galactic nucleus in Circinus, I : peculiar mid-IR morphology explained by a dusty hollow cone [PDF]
, 2017 Recent high angular resolution observations resolved for the first time the mid-infrared (MIR) structure of nearby active galactic nuclei (AGN). Surprisingly, they revealed that a major fraction of their MIR emission comes from the polar regions. This is
M. Stalevski, D. Asmus, K. Tristram
semanticscholar +1 more source
Elliptical Galaxy in the Making: The Dual Active Galactic Nuclei and Metal-enriched Halo of Mrk 273 [PDF]
, 2019 A systematic analysis of the X-ray emission from the nearby ultraluminous infrared galaxy Mrk 273 was carried out by combining new 200 ksec Chandra data with archived 44 ksec data.
Iwasawa, Kazushi +9 more
core +2 more sources
COLLIMATION AND SCATTERING OF THE ACTIVE GALACTIC NUCLEUS EMISSION IN THE SOMBRERO GALAXY [PDF]
The Astrophysical Journal, 2013 15 pages, 5 ...
Tiago V. Ricci +2 more
openaire +3 more sources
X-Ray Flares in the Long-term Light Curve of Low-luminosity Active Galactic Nucleus M81*
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 +1 more source
X-ray Photons in the CO 2-1 'Lacuna' of NGC 2110
, 2019 A recent ALMA study of the Seyfert 2 Active Galactic Nucleus (AGN) NGC 2110 by Rosario et al. (2019) has reported a remarkable lack of CO 2-1 emission from the circumnuclear region, where optical lines and H2 emission are observed, leading to the ...
Elvis, M., Fabbiano, G., Paggi, A.
core +1 more source
The Peculiar Variable X-Ray Spectrum of the Active Galactic Nucleus PKS 2005–489
The Astrophysical Journal, 2023 PKS 2005−489 is a well-known, bright southern BL Lac object that has been detected up to TeV energies. In a low-flux state it exhibits the expected multiwavelength double-peaked spectrum in the radio− γ -ray band.
Owen Chase +6 more
doaj +1 more source
MULTI-PHASE NATURE OF A RADIATION-DRIVEN FOUNTAIN WITH NUCLEAR STARBURST IN A LOW-MASS ACTIVE GALACTIC NUCLEUS [PDF]
, 2016 The structures and dynamics of molecular, atomic, and ionized gases are studied around a low-luminosity active galactic nucleus (AGN) with a small ( 2 × 10 6 M ⊙ ) black hole using three-dimensional (3D) radiation–hydrodynamic simulations.
K. Wada, M. Schartmann, R. Meijerink
semanticscholar +1 more source