Results 171 to 180 of about 90,767 (300)

Resolving a Candidate Dual Active Galactic Nucleus with ∼100 pc Separation in MCG-03-34-64

The Astrophysical Journal
We report the serendipitous multiwavelength discovery of a candidate dual black hole system with a separation of ∼100 pc, in the gas-rich luminous infrared galaxy MCG-03-34-64 ( z = 0.016).
Anna Trindade Falcão, T. J. Turner, S. B. Kraemer, J. Reeves, V. Braito, H. R. Schmitt, L. Feuillet   +6 more
doaj   +1 more source

Testing General Relativity with X-ray Reflection Spectroscopy of a\n 'Bare' Active Galactic Nucleus [PDF]

, 2018
Ashutosh Tripathi
openalex   +1 more source

Active Galactic Nucleus Variability in the Age of Rubin

, 2022
Cyril Creque‐Sarbinowski, Marc Kamionkowski, B. Zhou   +2 more
openalex   +1 more source

Active Galactic Nucleus Activity in Giant, Low Surface Brightness Galaxies

The Astronomical Journal, 1998
A search of large, H I–rich disk galaxies finds a significantly higher fraction of low-luminosity active galactic nucleus (AGN) signatures compared with other late-type galaxies. Approximately half the galaxies selected in this sample have AGN-like behavior in their cores; the rest have H II nuclei resulting from simple star formation.
openaire   +1 more source

Flares from stars crossing active galactic nucleus discs on low-inclination orbits [PDF]

, 2023
Hiromichi Tagawa, Zoltán Haiman
openalex   +1 more source

The Atacama Cosmology Telescope: Systematic Transient Search of Single Observation Maps

The Astrophysical Journal
We conduct a systematic search for astrophysical transients using data from the Atacama Cosmology Telescope. The data were taken from 2017 to 2022 in three frequency bands spanning 77 to 277 GHz.
Emily Biermann, Yaqiong Li, Sigurd Naess, Steve K. Choi, Susan E. Clark, Mark Devlin, Jo Dunkley, P. A. Gallardo, Yilun Guan, Allen Foster, Matthew Hasselfield, Carlos Hervías-Caimapo, Matt Hilton, Adam D. Hincks, Anna Y. Q. Ho, John C. Hood II, Kevin M. Huffenberger, Arthur Kosowsky, Michael D. Niemack, John Orlowski-Scherer, Lyman Page, Bruce Partridge, Maria Salatino, Cristóbal Sifón, Suzanne T. Staggs, Cristian Vargas, Edward J. Wollack   +26 more
doaj   +1 more source

The ALPINE-ALMA [CII] survey: Double stellar population and active galactic nucleus activity in a galaxy at z ∼ 5.5

, 2023
L. Barchiesi, M. Dessauges‐Zavadsky, C. Vignali, F. Pozzi, R. Marques-Chaves, A. Feltre, A. Faisst, M. Béthermin, P. Cassata, S. Charlot, Yoshinobu Fudamoto, M. Ginolfi, E. Ibar, G. C. Jones, Michael Romano, D. Schaerer, L. Vallini, E. Vanzella, Lin Yan   +18 more
openalex   +1 more source

Star formation around active galactic nuclei [PDF]

Active galactic nuclei (Seyfert nuclei and their relatives) and intense star formation can both deliver substantial amounts of energy to the vicinity of a galactic nucleus.
Keel, William C.
core   +1 more source

Constraining Active Galactic Nucleus Jets with Spectrum and Core Shift: The Case of M87

The Astrophysical Journal
We analytically model stationary and axisymmetric active galactic nucleus jets, assuming energy conservation along each magnetic flux tube. Using very long baseline interferometry (VLBI) observations and published general relativistic magnetohydrodynamic
Kouichi Hirotani, Hsien Shang, Ruben Krasnopolsky, Satoki Matsushita, Britton Jeter, Keiichi Asada   +5 more
doaj   +1 more source

Investigating the properties of active galactic nucleus feedback in hot atmospheres triggered by cooling-induced gravitational collapse [PDF]

, 2011
Edward C. D. Pope, J. Trevor Mendel, Stanislav S. Shabala   +2 more
openalex   +1 more source