Results 11 to 20 of about 1,302 (205)

Magnetohydrodynamics Simulations of Active Galactic Nucleus Disks and Jets [PDF]

Annual Review of Astronomy and Astrophysics, 2020
There is a broad consensus that accretion onto supermassive black holes and consequent jet formation power the observed emission from active galactic nuclei (AGNs). However, there has been less agreement about how jets form in accretion flows, their possible relationship to black hole spin, and how they interact with the ...
Davis, Shane W., Tchekhovskoy, Alexander
openaire   +2 more sources

Core-collapse Supernova Explosions in Active Galactic Nucleus Accretion Disks

The Astrophysical Journal, 2023
Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium.
Fu-Lin Li, Yu Liu, Xiao Fan, Mao-Kai Hu, Xuan Yang, Jin-Jun Geng, Xue-Feng Wu   +6 more
doaj   +1 more source

THE IMPACT OF GALAXY INTERACTIONS ON ACTIVE GALACTIC NUCLEUS ACTIVITY IN zCOSMOS [PDF]

The Astrophysical Journal, 2011
Close encounters between galaxies are expected to be a viable mechanism, as predicted by numerical simulations, by which accretion onto supermassive black holes can be initiated. To test this scenario, we construct a sample of 562 galaxies (M_* > 2.5 × 10^(10) M_☉) in kinematic pairs over the redshift range 0.25 2 × 10^(42) erg s^(–1)) detected by ...
Maier, C., Mignoli, M., Pello, R., Pérez-Montero, E., Ricciardelli, E., Peng, Y., Scodeggio, M., Tanaka, M., Tasca, L., Tresse, L., Vergani, D., Zucca, E., Brusa, M., Cappelluti, N., Comastri, A., Finoguenov, A., Fu, H., Gilli, R., Hao, H., Ho, L.~c., Salvato, M., Silverman, J.~d., Kampczyk, P., Jahnke, K., Andrae, R., Lilly, S.~j., Elvis, M., Civano, F., Mainieri, V., Vignali, C., Zamorani, G., Nair, P., Le Fèvre, O., Ravel, L., Bardelli, S., Bongiorno, A., Bolzonella, M., Cappi, A., Caputi, K., Carollo, C.~m., Contini, T., Coppa, G., Cucciati, O., Torre, S., Franzetti, P., Garilli, B., Halliday, C., Hasinger, G., Iovino, A., Knobel, C., Koekemoer, A.~m., Kovač, K., Lamareille, F., Le Borgne, J.-F., Le Brun, V.   +54 more
openaire   +5 more sources

X-Ray Emission of Ultraviolet Variable Active Galactic Nucleus Candidates

The Astronomical Journal, 2023
We analyze the X-ray properties of a sample of 23 high-probability active galactic nucleus (AGN) candidates with ultraviolet variability identified in Wasleske et al.
Erik J. Wasleske, Vivienne F. Baldassare
doaj   +1 more source

Active galactic nucleus jet feedback in hydrostatic haloes

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Feedback driven by jets from active galactic nuclei is believed to be responsible for reducing cooling flows in cool-core galaxy clusters. We use simulations to model feedback from hydrodynamic jets in isolated haloes. While the jet propagation converges only after the diameter of the jet is well resolved, reliable predictions ...
Rainer Weinberger, Kung-Yi Su, Kristian Ehlert, Christoph Pfrommer, Lars Hernquist, Greg L Bryan, Volker Springel, Yuan Li, Blakesley Burkhart, Ena Choi, Claude-André Faucher-Giguère   +10 more
openaire   +3 more sources

A possible active galactic nucleus in M82? [PDF]

New Astronomy Reviews, 1999
MERLIN and VLA observations of the galaxy M82 have detected a jet-like elongated radio continuum feature emanating from one of the compact sources, 44.01+59.6, embedded in the starburst. The proximity of this source to the dynamical centre of M82 led us to suspect that it could be a weak active nucleus rather than a supernova remnant.
K. A. Wills, A. Pedlar, T. W. B. Muxlow, I. R. Stevens   +3 more
openaire   +1 more source

AN OFF-CENTERED ACTIVE GALACTIC NUCLEUS IN NGC 3115 [PDF]

The Astrophysical Journal, 2014
NGC 3115 is an S0 galaxy that has always been considered to have a pure absorption-line spectrum. Some recent studies have detected a compact radio-emitting nucleus in this object, coinciding with the photometric center and with a candidate for the X-ray nucleus. This is evidence of the existence of a low-luminosity active galactic nucleus (AGN) in the
R. B. Menezes, J. E. Steiner, T. V. Ricci   +2 more
openaire   +2 more sources

UNMASKING THE ACTIVE GALACTIC NUCLEUS IN PKS J2310-437 [PDF]

The Astrophysical Journal, 2009
PKS J2310-437 is an AGN with bright X-ray emission relative to its weak radio emission and optical continuum. It is believed that its jet lies far enough from the line of sight that it is not highly relativistically beamed. It thus provides an extreme test of AGN models.
Bliss, A. F., Worrall, D. M., Birkinshaw, M., Murray, S. S., Tananbaum, H.   +4 more
openaire   +3 more sources

Probing the Heart of an Active Galactic Nucleus: NGC 1068 [PDF]

Symposium - International Astronomical Union, 2001
We present results from integral field spectroscopy of the narrow line region of NGC 1068, carried out with the MPE 3D near infrared imaging spectrometer. A map and velocity field of the [Fe II] fine structure line at 1.64μm is presented. The kinematics of the [Fe II] emission, which arises in partially ionized zones, shows red shifted emission in the ...
Tecza, Matthias, Thatte, Niranjan, Maiolino, Roberto   +2 more
openaire   +2 more sources

Active Galactic Nucleus Variability in the Age of Rubin

The Astrophysical Journal, 2022
Abstract Over the next 10 years, the Vera C. Rubin Observatory (Rubin) will observe ∼10 million active galactic nuclei (AGNs) with a regular and high cadence. During this time, the intensities of most of these AGNs will fluctuate stochastically.
Cyril Creque-Sarbinowski, Marc Kamionkowski, Bei Zhou   +2 more
openaire   +1 more source