Results 61 to 70 of about 141,201 (236)

MACER3D—An Upgrade of MACER2D with Enhanced Subgrid Models and Gas Physics—and Its Application to Simulating AGN Feedback in a Massive Elliptical Galaxy

The Astrophysical Journal
We present Multiscale AGN-regulated Cosmic Ecosystem Resolver in 3D (MACER3D), a new suite of three-dimensional hydrodynamic simulations that study active galactic nuclei (AGN) feedback on galactic scales over gigayears in duration, with major ...
Haoen Zhang, Haojie Xia, Suoqing Ji, Feng Yuan, Minhang Guo, Rui Zhang, Bocheng Zhu, Yihuan Di, Aoyun He, Tingfang Su, Yuxuan Zou   +10 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

The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei. IV. Association with Galaxy Mergers

, 2018
Double-peaked narrow emission lines in active galactic nucleus (AGN) spectra can be produced by AGN outflows, rotation, or dual AGNs, which are AGN pairs in ongoing galaxy mergers.
Barrows, R. Scott, Comerford, Julia M., Cooper, Michael C., Müller-Sánchez, Francisco, Nevin, Rebecca, Newman, Jeffrey A., Stemo, Aaron   +6 more
core   +1 more source

A Multiwavelength Evaluation of AGN in the Post-starburst Phase

The Astrophysical Journal
The quenching of star formation is a crucial phase in galaxy evolution. Although feedback from active galactic nuclei (AGN) has been proposed as a key driver of this transition, the lack of strong AGN in nearby quenching galaxies raises questions about ...
Yuanze Luo, Kate Rowlands, Katherine Alatalo, Lauranne Lanz, Timothy Heckman, Elizaveta Sazonova, Pallavi Patil, Omar Almaini, Vincenzo R. D’Onofrio, K. Decker French, Justin Otter, Andreea O. Petric, Namrata Roy, Maya Skarbinski, Justin S. Spilker, Margaret E. Verrico, Vivienne Wild   +16 more
doaj   +1 more source

Intermediate Inclinations of Type 2 Coronal-Line Forest AGN

, 2015
Coronal-Line Forest Active Galactic Nuclei (CLiF AGN) are remarkable in the sense that they have a rich spectrum of dozens of coronal emission lines (e.g. [FeVII], [FeX] and [NeV]) in their spectra.
Crenshaw, Michael, Elvis, Martin, Glidden, Ana, Rose, Marvin   +3 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

The Evolution and Eddington Ratio Distribution of Compton Thick Active Galactic Nuclei

, 2010
Previous studies of the active galactic nuclei (AGN) contribution to the cosmic X-ray background (CXB) consider only observable parameters such as luminosity and absorbing column.
Ajello, Alexander, Antonucci, Ballantyne, Draper, Fiore, Fiore, Gendreau, González-Martín, Gruber, Gültekin, Hopkins, Kushino, Malizia, Merloni, Netzer, Page, Polletta, Rigby, Small, Terashima, Treister, Treister, Treister, Tueller, Ueda, Vecchi, Yan   +27 more
core   +1 more source

Accretion Disk Structure and Kinematics of the Broad Line Regions in Selected AGN

Open Astronomy, 2011
Broad emission line regions in AGN are connected with the outer layers of accretion disks. This has been shown by means of line variability studies of individual AGN as well as line profile studies of AGN samples.
Kollatschny W., Zetzl M.
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

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