Results 121 to 130 of about 62,437 (252)

A Morphological Identification and Study of Radio Galaxies from LoTSS DR2. I. The “Winged” Radio Galaxies

The Astrophysical Journal Supplement Series
We conducted an extensive identification and analysis of various morphological classes and subclasses of radio galaxies using the latest high-resolution data from the second data release of the LOFAR Two-metre Sky Survey.
Soumen Kumar Bera, Taotao Fang, Tapan K. Sasmal, M. Kunert-Bajraszewska, Xuelei Chen, Soumen Mondal   +5 more
doaj   +1 more source

TANAMI - Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry

, 2010
We present a summary of the observation strategy of TANAMI (Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry), a monitoring program to study the parsec-scale structure and dynamics of relativistic jets in active galactic nuclei (
A. K. Tzioumis, A. L. Fey, C. Müller, C. Plötz, D. J. Thompson, D. L. Jauncey, E. Ros, G. B. Taylor, G. Tosti, H. Hase, J. A. Zensus, J. E. J. Lovell, J. F. H. Quick, J. Wilms, K. J. Johnston, L. Fuhrmann, M. Böck, M. Kadler, M. Lister, M. S. Dutka, P. G. Edwards, R. A. Gaume, R. Booth, R. Ojha, S. Horiuchi, S. J. Tingay, U. Katz   +26 more
core   +1 more source

VaDAR: Varstrometry for Dual AGN Using Radio Interferometry

The Astrophysical Journal
Binary and dual active galactic nuclei (AGNs) are an important observational tool for studying the formation and dynamical evolution of galaxies and supermassive black holes.
Emma Schwartzman, Tracy E. Clarke, Kristina Nyland, Nathan J. Secrest, Ryan W. Pfeifle, Henrique Schmitt, Shobita Satyapal, Barry Rothberg   +7 more
doaj   +1 more source

Induced Compton Scattering in Gigahertz Peak Spectrum Sources

, 1997
We revisit the shocked shell model for the class of Active Galactic Nuclei known as Gigahertz Peak Spectrum sources, incorporating new observational data on the radiation brightness temperatures. We argue that in addition to free-free absorption, induced
Coppi P., Fanti R., Geoffrey V. Bicknell, Levinson A., Michael A. Dopita, Sunyaev R. A., Zdenka Kuncic   +6 more
core   +1 more source

Deciphering Radio Emissions from Accretion Disk Winds in Radio-quiet Active Galactic Nuclei

The Astrophysical Journal
Unraveling the origins of radio emissions from radio-quiet active galactic nuclei (RQ AGNs) remains a pivotal challenge in astrophysics. One potential source of this radiation is the shock interaction between AGN disk winds and the interstellar medium ...
Tomoya Yamada, Nobuyuki Sakai, Yoshiyuki Inoue, Tomonari Michiyama   +3 more
doaj   +1 more source

VLBI observations of nearby radio loud Active Galactic Nuclei

, 2008
We present an update of the parsec scale properties of the Bologna Complete Sample consisting of 95 radio sources from the B2 Catalog of Radio Sources and the Third Cambridge Revised Catalog (3CR), with z < 0.1.
Baum S, Elisabetta Liuzzo, Feretti L, Floyd D J E, Gabriele Giovannini, Giovannini G, Giovannini G, Giovannini G, Gregory B Taylor, Marcello Giroletti   +9 more
core   +1 more source

Discovery of Large Doppler Factors in Radio-Loud Active Galactic Nuclei [PDF]

, 1999
Kenta Fujisawa, Hideyuki Kobayashi, Kiyoaki Wajima, H. Hirabayashi, Seiji Kameno, Makoto Inoue   +5 more
openalex   +1 more source

Numerical Simulations of Jets from Active Galactic Nuclei

Galaxies, 2019
Numerical simulations have been playing a crucial role in the understanding of jets from active galactic nuclei (AGN) since the advent of the first theoretical models for the inflation of giant double radio galaxies by continuous injection in the late ...
J. Martí
semanticscholar   +1 more source

Do All the Quasars and High-excitation Radio Galaxies (HERGs) in the 3CRR Catalog Contain a Magnetically Arrested Disk (MAD)?

The Astrophysical Journal
Based on the magnetization, an accretion disk with a large-scale magnetic field can be separated into either standard and normal evolution or magnetically arrested disk (MAD), which are difficult to identify from observations. It is still unclear whether
Shuang-Liang Li, Wenwen Zuo, Xinwu Cao
doaj   +1 more source

Optical identification of radio-loud active galactic nuclei in the ROSAT-Green-Bank sample with SDSS spectroscopy [PDF]

, 2009
De-Liang WANG, Jian-Guo Wang, Xiao bo Dong   +2 more
openalex   +1 more source