Results 91 to 100 of about 90,767 (300)
Gamma-ray active galactic nucleus type through machine-learning algorithms [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 7 pages, 3 figures, 3 tables, accepted for publication in MNRAS.
Hassan, T. +3 more
openaire +2 more sources
Observational limits on type 1 active galactic nucleus rate in COSMOS [PDF]
, 2009 We present black hole masses and accretion rates for 182 Type 1 active galactic nuclei (AGNs) in COSMOS. We estimate masses using the scaling relations for the broad H β, Mg ii, and C iv emission lines in the redshift ranges 0.16 < z < 0.88, 1 < z < 2 ...
Bongiorno, Angela +15 more
core
Revealing the active galactic nucleus in the superantennae through L-band spectroscopy
, 2003 We present an L-band spectrum of the Ultraluminous Infrared Galaxy IRAS 19254-7245 (the Superantennae), obtained with VLT-ISAAC. The high signal to noise ratio allows a study of the main spectral features with unprecedented detail for an extragalactic ...
A. Franceschini +13 more
core +1 more source
Deep Learning‐Assisted Coherent Raman Scattering Microscopy
Advanced Intelligent Discovery, EarlyView.The analytical capabilities of coherent Raman scattering microscopy are augmented through deep learning integration. This synergistic paradigm improves fundamental performance via denoising, deconvolution, and hyperspectral unmixing. Concurrently, it enhances downstream image analysis including subcellular localization, virtual staining, and clinical ...
Jianlin Liu +4 more
wiley +1 more source
UNDERSTANDING DUAL ACTIVE GALACTIC NUCLEUS ACTIVATION IN THE NEARBY UNIVERSE [PDF]
The Astrophysical Journal, 2012 We study the fraction of dual active galactic nuclei (AGNs) in a sample of 167 nearby (z < 0.05), moderate-luminosity, ultra-hard X-ray-selected AGNs from the all-sky Swift Burst Alert Telescope (BAT) survey. Combining new Chandra and Gemini observations together with optical and X-ray observations, we find that the dual AGN frequency at scales
Koss, M. +5 more
openaire +2 more sources
HST and LAMOST discover a dual active galactic nucleus in J0038+4128
, 2014 We report the discovery of a kiloparsec-scale dual active galactic nucleus (AGN) in J0038+4128. From the Hubble Space Telescope (HST) Wide Field Planetary Camera (WFPC2) images, we find two optical nuclei with a projection separation of 4.7 kpc (3.44 ...
Hou, Y. -H. +8 more
core +1 more source
Self‐Healing Materials from Electronically Integrated Microscopic Robots
Advanced Intelligent Systems, EarlyView.Submillimeter robots can use electronically controlled electrodeposition to assemble into a material structure. The resulting aggregate possesses ultralow density, high strength‐to‐weight ratio, and can heal from damage. Further afield, these results clear a path to materials that organize or adapt by directing matter and information at the microscale.
Lucas C. Hanson +2 more
wiley +1 more source
The Astrophysical JournalIn this work, we aim to further populate the low-mass regime of black hole (BH) scaling relations to better understand the formation and growth mechanisms of central supermassive BHs. We target six galaxies that have been previously identified as hosting
Megan R. Sturm +3 more
doaj +1 more source
MULTI-PHASE NATURE OF A RADIATION-DRIVEN FOUNTAIN WITH NUCLEAR STARBURST IN A LOW-MASS ACTIVE GALACTIC NUCLEUS [PDF]
, 2016 The structures and dynamics of molecular, atomic, and ionized gases are studied around a low-luminosity active galactic nucleus (AGN) with a small ( 2 × 10 6 M ⊙ ) black hole using three-dimensional (3D) radiation–hydrodynamic simulations.
K. Wada, M. Schartmann, R. Meijerink
semanticscholar +1 more source
The fast UV variability of the active galactic nucleus in Fairall 9
, 2014 We present results from a new optical/UV/X-ray monitoring campaign of the luminous Seyfert galaxy Fairall 9 using the Swift satellite. Using the UV-Optical Telescope (UVOT) on Swift, we find correlated optical/UV variability on all time scales ranging ...
Lohfink, Anne +4 more
core +1 more source