Results 121 to 130 of about 80,128 (249)

Black hole mass estimation from X-ray variability measurements in active galactic nuclei [PDF]

, 2004
M. Nikołajuk, I. E. Papadakis, B. Czerny   +2 more
openalex   +1 more source

JWST NIRCam Imaging of NGC 4258. I. Observation Overview

The Astrophysical Journal
We present James Webb Space Telescope (JWST) Near-Infrared Camera imaging of the nearby Seyfert 1.9 galaxy NGC 4258, which hosts strong star formation regions as well as an anomalous jet-like radio structure that extends through a significant portion of ...
Travis C. Fischer, Nicholas F. Cothard, Omnarayani Nayak, Henrique R. Schmitt, Erin C. Smith, Jason Glenn   +5 more
doaj   +1 more source

On the Extremely X-Ray Variable Active Galactic Nuclei in the XMM-LSS Field

The Astrophysical Journal
We present a systematic investigation of extremely X-ray variable active galactic nuclei (AGNs) in the ≈5.3 deg ^2 XMM-SERVS XMM-LSS region. Eight variable AGNs are identified with rest-frame 2 keV flux density variability amplitudes around 6–12.
Zijian Zhang, Bin Luo, Linhua Jiang, W. N. Brandt, Jian Huang, Qingling Ni   +5 more
doaj   +1 more source

Gravitational microlensing of active galactic nuclei dusty tori [PDF]

, 2012
Marko Stalevski, P. Jovanović, Luka Č. Popović, M. Baes   +3 more
openalex   +1 more source

All Data Used in "The effects of Time-Variable Absorption due to Gamma-Ray Bursts In Active Galactic Nuclei Accretion Disks"

, 2022
Michael Ray
openalex   +1 more source

The quenching of star formation in accretion-driven clumpy\n turbulent tori of active galactic nuclei [PDF]

, 2013
B. Vollmer, R. Davies
openalex   +1 more source

The OPTX Project: Comparing the Optical and X-Ray Spectral Properties of Active Galactic Nuclei [PDF]

, 2009
Laura Trouille, A. J. Barger
openalex   +1 more source

The role of grain size in active galactic nuclei torus dust models [PDF]

, 2023
O. González-Martín, C. Ramos Almeida, J. Fritz, A. Alonso‐Herrero, S. F. Hönig, P. F. Roche, Donají Esparza-Arredondo, I. García-Bernete, S. García‐Burillo, Natalia Osorio-Clavijo, Omar Ulises Reyes-Amador, Marko Stalevski, César Victoria-Ceballos   +12 more
openalex   +1 more source

Age determination of the nuclear stellar population of Active Galactic Nuclei using Locally Weighted Regression [PDF]

, 2003
Trilce Estrada-Piedra, J. P. Torres-Papaqui, R. Terlevich, Olac Fuentes, E. Terlevich   +4 more
openalex   +1 more source

Infrared-ultraviolet spectra of active galactic nuclei [PDF]

Data from IRAS and IUE were combined with ground based optical and infrared spectrophotometry to derive emission line free spectral energy distributions (SEDs) for 29 active galactic nuclei (AGNs) between 0.1 and 100 microns.
Malkan, M. A., These corrected SEDs are shown.   +1 more
core   +1 more source