Results 91 to 100 of about 126,286 (222)

Active Galactic Nuclei Selection and Demographics: A New Age with JWST/MIRI

The Astrophysical Journal
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.
Jianwei Lyu, Stacey Alberts, George H. Rieke, Irene Shivaei, Pablo G. Pérez-González, Fengwu Sun, Kevin N. Hainline, Stefi Baum, Nina Bonaventura, Andrew J. Bunker, Eiichi Egami, Daniel J. Eisenstein, Michael Florian, Zhiyuan Ji, Benjamin D. Johnson, Jane Morrison, Marcia Rieke, Brant Robertson, Wiphu Rujopakarn, Sandro Tacchella, Jan Scholtz, Christopher N. A. Willmer   +21 more
doaj   +1 more source

The Halo Occupation Distribution of Active Galactic Nuclei

, 2011
Using a fully cosmological hydrodynamic simulation that self-consistently incorporates the growth and feedback of supermassive black holes and the physics of galaxy formation, we examine the effects of environmental factors (e.g., local gas density ...
Allen, Berlind, Bond, Bondi, Bonoli, Booth, Boyle, Boyle, Bromm, Bromm, Cattaneo, Chatterjee, Colberg, Colin DeGraf, Conroy, Cowie, Croft, Croom, Croton, Daisuke Nagai, Degraf, Degraf, Degraf, Di, Di, Fan, Gallo, Gebhardt, Gilli, Graham, Graham, Hopkins, Hopkins, Hopkins, Johansson, Jonathan Richardson, Katz, Kauffmann, Kravtsov, Lapi, Lemson, Lidz, Lin, Ma, Malbon, Marconi, Martini, Martini, Marulli, Marulli, Menci, Merritt, Miyaji, Mo, Monaghan, Myers, Nagai, Navarro, Robertson, Ross, Salucci, Seljak, Shankar, Shankar, Shankar, Shen, Shen, Sijacki, Silk, Soltan, Spergel, Springel, Springel, Starikova, Suchetana Chatterjee, Teyssier, Thacker, Tinker, Tiziana Di Matteo, Tremaine, Ueda, van den, Wyithe, Yan, Yang, Zehavi, Zheng, Zheng, Zheng, Zheng Zheng   +89 more
core   +1 more source

A Panchromatic View of AGN [PDF]

, 2004
We review the continuum emission of Active Galactic Nuclei (AGN) over the entire electromagnetic spectrum. After a brief historical introduction, we describe the main spectral properties of unobscured AGN, discussing the selection biases which prevent us from having a complete view of the AGN population in the universe, and trying to build an updated ...
Risaliti, G., Elvis, M.
openaire   +2 more sources

Evidence of Feedback Effects in Low-luminosity Active Galactic Nuclei Revealed by JWST Spectroscopy

The Astrophysical Journal Letters
This Letter presents an analysis of the infrared (∼3–28 μ m) spectra extracted from the nuclear ( r  
Lulu Zhang, Chris Packham, Erin K. S. Hicks, Ric I. Davies, Daniel E. Delaney, Francoise Combes, Miguel Pereira-Santaella, Almudena Alonso-Herrero, Claudio Ricci, Omaira González-Martín, Laura Hermosa Muñoz, Ismael García-Bernete, Cristina Ramos Almeida, Dimitra Rigopoulou, Fergus R. Donnan, Enrica Bellocchi, Nancy A. Levenson, Martin J. Ward, Santiago García-Burillo, Sebastian F. Hoenig   +19 more
doaj   +1 more source

Layered Double Hydroxide Nanomaterials Encapsulating Angelica gigas Nakai Extract for Potential Anticancer Nanomedicine

Frontiers in Pharmacology, 2018
We prepared hybrids consisting of Angelica gigas Nakai (AGN) root or flower extract and layered double hydroxide (LDH) for potential anticancer nanomedicine, as decursin species (DS) in AGN are known to have anticancer activity. Dimethylsulfoxide solvent
Hyoung-Jun Kim, Gyeong Jin Lee, Ae-Jin Choi, Tae-Hyun Kim, Tae-Hyun Kim, Tae-il Kim, Tae-il Kim, Jae-Min Oh   +7 more
doaj   +1 more source

X-rays across the galaxy population - III. The incidence of AGN as a function of star formation rate

, 2019
We map the co-eval growth of galaxies and their central supermassive black holes in detail by measuring the incidence of Active Galactic Nuclei (AGN) in galaxies as a function of star formation rate (SFR) and redshift (to z~4).
Aird, James, Coil, Alison L., Georgakakis, Antonis   +2 more
core   +1 more source

Frying Doughnuts: What can the reprocessing of X-rays to IR tell us about the AGN environment?

, 2008
Active galactic nuclei (AGN) produce vast amounts of high energy radiation deep in their central engines. X-rays either escape the AGN or are absorbed and re-emitted mostly as IR.
Antonucci, B. McKernan, Bian, Boller, Bonatto, Boroson, Botte, Buchanan, C. S. Reynolds, Efstathiou, Efstathiou, Eracleous, Foschini, Gonzalez Delgado, Green, Grupe, Ho, Horst, Itoh, K. E. S. Ford, Krabbe, Kraft, Kukula, Leighly, Lutz, Malizia, Markowitz, Mas-Hesse, Matt, McKernan, McKernan, Miller, Miniutti, Miyaji, Mushotzky, N. Chang, Nagar, Perola, Peterson, Pier, Polletta, Porquet, Revnivtsev, Risaliti, Rush, Sanders, Schade, Shinozaki, Sirocky, Smith, Spergel, Tajer, Treister, Tueller, Turner, Veilleux, Voges, Winter   +57 more
core   +1 more source

A Systematic Study of AGN Feedback in a Disk Galaxy. I. Global Overview

The Astrophysical Journal
This is the first paper in a series using our MACER framework to investigate the evolution of a disk galaxy, which emphasizes the role of active galactic nucleus (AGN) feedback and incorporates cosmological inflows.
Yuxuan Zou, Feng Yuan, Suoqing Ji, Luis C. Ho, Yingjie Peng, Jing Wang, Bocheng Zhu, Tao Wang   +7 more
doaj   +1 more source

Cross-correlation of Luminous Red Galaxies with Machine Learning Selected Active Galactic Nuclei in HSC-SSP: Unobscured AGN Residing in More Massive Halos

The Astrophysical Journal
Active galactic nuclei (AGN) are the signposts of black hole growth, and likely play an important role in galaxy evolution. An outstanding question is whether AGN of different spectral types indicate different evolutionary stages in the coevolution of ...
Rodrigo Córdova Rosado, Andy D. Goulding, Jenny E. Greene, Grayson C. Petter, Ryan C. Hickox, Nickolas Kokron, Michael A. Strauss, Jahmour J. Givans, Yoshiki Toba, Cassandra Starr Henderson   +9 more
doaj   +1 more source

Understanding the relationship between the environment of the black hole and the radio jet: optical spectroscopy of compact AGN

, 2004
We aim to investigate the relationship between radio jet activity on parsec-scales and the characteristics of both the bright active galactic nuclei (AGN) and their broad line regions (BLR).
Arshakian, T. G., Chavushyan, V. H., Ros, E., Zensus, J. A.   +3 more
core   +2 more sources