Results 111 to 120 of about 141,201 (236)

The Role of Environment in Triggering Active Galactic Nuclei—Evidence for a Change at z ∼ 1

The Astrophysical Journal
What triggers active galactic nuclei (AGN) in some galaxies and what role this brief period of activity plays in the overall evolution of galaxies are still open questions. This paper explores whether or not the local, on scales of ≈1 Mpc, galaxy density
Jason R. Reeves, Anna Sajina, Henry Adair, Duncan Farrah, Mark Lacy   +4 more
doaj   +1 more source

Revised Active Galactic Nuclei Spectral Model Reveals a More Significant Role in Cosmic Reionization

The Astrophysical Journal Letters
Reionization marks one of the most important phase transitions in the history of the Universe, during which neutral baryonic matter was transformed into ionized plasma.
Tong Su, Qi Guo, Wenxiang Pei, Linhua Jiang   +3 more
doaj   +1 more source

AGN jet power and feedback controlled by Bondi accretion in brightest cluster galaxies [PDF]

, 2014
Yutaka Fujita, Nozomu Kawakatu, Isaac Shlosman   +2 more
openalex  

AGN’s Deadness Over Cosmic Time: UVJ Diagrams of X-Ray AGN

, 2023
Rachel Cionitti, Brandon Coleman, Allison Kirkpatrick, Greg Troiani   +3 more
openalex   +1 more source

Lyman Continuum Emission from Active Galactic Nuclei at 2.3 ≲ z ≲ 3.7 in the UVCANDELS Fields

The Astrophysical Journal
We present the results of our search for Lyman continuum (LyC)-emitting (weak) active galactic nuclei (AGN) at redshifts 2.3 ≲ z ≲ 4.9 from Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) F275W observations in the Ultraviolet Imaging of the ...
Brent M. Smith, Rogier A. Windhorst, Harry Teplitz, Matthew Hayes, Marc Rafelski, Mark Dickinson, Vihang Mehta, Nimish P. Hathi, John MacKenty, L. Y. Aaron Yung, Anton M. Koekemoer, Emmaris Soto, Christopher J. Conselice, Ray A. Lucas, Xin Wang, Keunho J. Kim, Anahita Alavi, Norman A. Grogin, Ben Sunnquist, Laura Prichard, Rolf A. Jansen, the UVCANDELS team   +21 more
doaj   +1 more source

Cool-core Destruction in Merging Clusters with Active Galactic Nucleus Feedback and Radiative Cooling

The Astrophysical Journal
The origin of the cool-core (CC) and non-cool-core (NCC) dichotomy of galaxy clusters remains uncertain. Previous simulations have found that cluster mergers are effective in destroying CCs but fail to prevent overcooling in cluster cores when radiative ...
Shuang-Shuang Chen, Hsiang-Yi Karen Yang, Hsi-Yu Schive, Chun-Yen Chen, John ZuHone, Massimo Gaspari   +5 more
doaj   +1 more source

Rimmed and Rippled Accretion Disc Models to Explain AGN Continuum Lags [PDF]

, 2022
D. A. Starkey, Jiamu Huang, K. Horne, D. N. C. Lin   +3 more
openalex   +1 more source

Binary black hole mergers in AGN accretion discs: gravitational wave rate density estimates [PDF]

, 2020
M. Gröbner, W. Ishibashi, S. Tiwari, M. Haney, P. Jetzer   +4 more
openalex   +1 more source

VLBI observations of the gravitationally lensed, z=2.3 starburst/AGN galaxy IRAS F10214 [PDF]

, 2011
Roger Deane, Steve Rawlings, Ian Heywood, Hans Rainer Kloeckner, K. Grainge   +4 more
openalex   +1 more source

Hot Coronae in Local AGN: Present Status and Future Perspectives [PDF]

, 2018
Andrea Marinucci, F. Tamborra, S. Bianchi, Michal Dovčiak, G. Matt, R. Middei, A. Tortosa   +6 more
openalex   +1 more source