Results 1 to 10 of about 55,425 (200)
Reverberation mapping of active galactic nuclei: from X-ray corona to dusty torus. [PDF]
iScience, 2021 Summary The central engines of active galactic nuclei (AGNs) are powered by accreting supermassive black holes, and while AGNs are known to play an important role in galaxy evolution, the key physical processes occur on scales that are too small to be ...
Cackett EM, Bentz MC, Kara E.
europepmc +3 more sources
Hierarchical Black Hole Mergers in Active Galactic Nuclei [PDF]
Physical Review Letters, 2019 The origins of the stellar-mass black hole mergers discovered by LIGO/Virgo are still unknown. Here we show that if migration traps develop in the accretion disks of active galactic nuclei (AGNs) and promote the mergers of their captive black holes, the ...
Y Yang, I Bartos, V Gayathri
exaly +2 more sources
Active Galactic Nuclei Selection and Demographics: A New Age with JWST/MIRI [PDF]
Astrophysical Journal, 2023 Understanding the coevolution of supermassive black holes and their host systems requires a comprehensive census of active galactic nuclei (AGNs) behavior across a wide range of redshift, luminosity, obscuration level, and galaxy properties.
J. Lyu 吕 +21 more
semanticscholar +1 more source
Evolutionary paths of active galactic nuclei and their host galaxies [PDF]
Nature Astronomy, 2023 This Article explores the evolutionary paths of galaxies on the black-hole mass–stellar mass plane in the nearby Universe, linking the properties of star formation and black-hole accretion and providing critical constraints for active galactic nuclei ...
Ming-Yang Zhuang, L. Ho
semanticscholar +1 more source
Quiescent and Active Galactic Nuclei as Factories of Merging Compact Objects in the Era of Gravitational Wave Astronomy [PDF]
Universe, 2023 Galactic nuclei harbouring a central supermassive black hole (SMBH), possibly surrounded by a dense nuclear cluster (NC), represent extreme environments that house a complex interplay of many physical processes that uniquely affect stellar formation ...
M. A. Sedda, S. Naoz, B. Kocsis
semanticscholar +1 more source
Feedback from Active Galactic Nuclei in Galaxy Groups [PDF]
Universe, 2021 The co-evolution between supermassive black holes and their environment is most directly traced by the hot atmospheres of dark matter halos. The cooling of the hot atmosphere supplies the central regions with fresh gas, igniting active galactic nuclei ...
D. Eckert +4 more
semanticscholar +1 more source
UNIFIED SCHEMES FOR RADIO-LOUD ACTIVE GALACTIC NUCLEI [PDF]
, 1995 The appearance of active galactic nuclei (AGN) depends so strongly on orientation that our current classification schemes are dominated by random pointing directions instead of more interesting physical properties.
C. Urry, P. Padovani
semanticscholar +1 more source
Spin Evolution of Stellar-mass Black Hole Binaries in Active Galactic Nuclei [PDF]
Astrophysical Journal, 2020 The astrophysical origin of gravitational-wave (GW) events is one of the most timely problems in the wake of the LIGO/Virgo discoveries. In active galactic nuclei (AGNs), binaries form and evolve efficiently by dynamical interactions and gaseous ...
H. Tagawa +3 more
semanticscholar +1 more source
The host galaxies of active galactic nuclei [PDF]
, 2003 We examine the properties of the host galaxies of 22 623 narrow-line active galactic nuclei (AGN) with 0.02 < z < 0.3 selected from a complete sample of 122 808 galaxies from the Sloan Digital Sky Survey.
G. Kauffmann +12 more
semanticscholar +1 more source
Astrophysical Journal Supplement Series, 2022 An incremental version of the fourth catalog of active galactic nuclei (AGNs) detected by the Fermi Large Area Telescope is presented. This version (4LAC-DR3) derives from the third data release of the 4FGL catalog based on 12 yr of E > 50 MeV gamma-ray ...
M. Ajello +100 more
semanticscholar +1 more source