Results 31 to 40 of about 264,441 (316)
Active galactic nucleus feedback in NGC 3982
Astronomy & Astrophysics, 2022 The energetic feedback from supermassive black holes can influence star formation at the centres of galaxies. Observational evidence for active galactic nucleus (AGN) impact on star formation can be searched for in galaxies by combining ultraviolet imaging and optical integral field unit data. The ultraviolet flux directly traces recent star formation,
P. Joseph, K. George, K. T. Paul
openaire +2 more sources
Aligning nuclear cluster orbits with an active galactic nucleus accretion disc [PDF]
, 2020 Active galactic nuclei (AGN) are powered by the accretion of disks of gas onto supermassive black holes (SMBHs). Stars and stellar remnants orbiting the SMBH in the nuclear star cluster (NSC) will interact with the AGN disk. Orbiters plunging through the
Gaia Fabj +5 more
semanticscholar +1 more source
Hydrodynamical Simulations of the Triggering of Nuclear Activities by Minor Mergers of Galaxies [PDF]
2019, Research in Astronomy and Astrophysics, 19, 177, 2021 Major mergers of galaxies are considered to be an efficient way to trigger Active Galactic Nuclei and are thought to be responsible for the phenomenon of quasars. This has however recently been challenged by observations of a large number of low luminosity Active Galactic Nuclei at low redshift ($z\lesssim1$) without obvious major merger signatures ...
arxiv +1 more source
A possible active galactic nucleus in M82? [PDF]
New Astronomy Reviews, 1999 MERLIN and VLA observations of the galaxy M82 have detected a jet-like elongated radio continuum feature emanating from one of the compact sources, 44.01+59.6, embedded in the starburst. The proximity of this source to the dynamical centre of M82 led us to suspect that it could be a weak active nucleus rather than a supernova remnant.
T. W. B. Muxlow +3 more
openaire +3 more sources
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
Neutron Star Mergers in Active Galactic Nucleus Accretion Disks: Cocoon and Ejecta Shock Breakouts
, 2021 Neutron star mergers are believed to occur in accretion disks around supermassive black holes. Here we show that a putative jet launched from the merger of a binary neutron star (BNS) or a neutron star–black hole (NSBH) merger occurring at the migration ...
Jin-Ping Zhu +3 more
semanticscholar +1 more source
Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516 [PDF]
, 2020 The changes of broad emission lines should be a crucial issue in understanding the physical properties of changing-look active galactic nuclei (CL-AGNs).
H. Feng +9 more
semanticscholar +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
FRAMEx. IV. Mechanical Feedback from the Active Galactic Nucleus in NGC 3079
The Astrophysical Journal, 2023 Using the Very Long Baseline Array, we observed the active galactic nucleus (AGN) in NGC 3079 over a span of six months to test for variability in the two main parsec-scale radio components, A and B , which lie on either side of the AGN.
Luis C. Fernandez +3 more
doaj +1 more source
Modeling Nearby Low-Luminosity Active-Galactic-Nucleus Jet Images at All VLBI Scales
Galaxies, 2022 Relativistic jets from nearby low-luminosity active-galactic-nuclei (LLAGN) were observed by Very-Long Baseline Interferometry (VLBI) across many orders of magnitude in space, from milliparsec to sub-parsec scales, and from the jet base in the vicinity ...
Hung-Yi Pu +2 more
doaj +1 more source