Results 81 to 90 of about 18,958 (240)

The Million Quasars (Milliquas) Catalogue, v8

The Open Journal of Astrophysics, 2023
Announcing the final release, v8, of the Milliquas (Million Quasars) quasar catalogue which presents all published quasars to 30 June 2023, including quasars from the first releases of the Dark Energy Spectroscopic Instrument (DESI) and the SDSS-DR18 ...
Eric Wim Flesch
doaj   +1 more source

The Nature of LoBAL QSOs. II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers

The Astrophysical Journal, 2023
Low-ionization broad absorption line QSOs (LoBALs) are suspected to be merging systems in which extreme, active galactic nucleus-driven outflows have been triggered.
Mariana S. Lazarova, Gabriela Canalizo, Mark Lacy, Wyatt Behn, Kaitlyn Raub, Vardha N. Bennert, Duncan Farrah   +6 more
doaj   +1 more source

Effects of essential caregiver policies on COVID‐19 and non‐COVID‐19 deaths in nursing homes

Health Economics, Volume 33, Issue 10, Page 2321-2341, October 2024.
Abstract Federal authorities banned nursing home visitation in the early days of the coronavirus disease 2019 (COVID‐19) pandemic. However, there was growing concern that physical isolation may have unintended harms on nursing home residents. Thus, nursing homes and policymakers faced a tradeoff between minimizing COVID‐19 outbreaks and limiting the ...
Mingyu Qi, Nadia Ghazali, R. Tamara Konetzka   +2 more
wiley   +1 more source

A Deep HST H-Band Imaging Survey of Massive Gas-Rich Mergers. II. The QUEST PG QSOs

, 2009
We report the results from a deep HST NICMOS H-band imaging survey of 28 z < 0.3 QSOs from the Palomar-Green (PG) sample. This program is part of QUEST (Quasar / ULIRG Evolution STudy) and complements a similar set of data on 26 highly-nucleated ULIRGs ...
A. Burkert, A. Contursi, Bentz, Bergeron, Bernardi, Bernardi, C. Y. Peng, Canalizo, D. B. Sanders, D. Lutz, D. S. N. Rupke, D.-C. Kim, Dasyra, Dasyra, Dasyra, Dickinson, E. Sturm, Fioc, Gonzaga, Governato, Graves, Guyon, Hamilton, Hopkins, Hyvönen, Häring, Johansson, K. M. Dasyra, Kim, Kim, Kormendy, L. C. Ho, L. J. Tacconi, Lilly, M. Schweitzer, Magorrian, Marconi, McLeod, Miller, Netzer, Onken, Pahre, Peletier, Peng, Peterson, R. Genzel, Rothberg, Rothberg, S. Veilleux, Schweitzer, Schweitzer, Scoville, Silge, Soifer, Storchi-Bergmann ., Surace, Tacconi, Tremaine, Veilleux, Veilleux, Veilleux, Veilleux, Veilleux, Vestergaard, Watson, Wolf, Zibetti   +66 more
core   +1 more source

X-ray and optical properties of Broad Absorption Line Quasars in the Canada-France-Hawaii Telescope Legacy Survey [PDF]

, 2010
We study the X-ray and optical properties of 16 Broad Absorption Line (BAL) quasars detected in about 3 degree square region common to the wide synoptic (W-1) component of the Canada-France-HawaiiTelescope Legacy Survey (CFHTLS) and the XMM Large Scale ...
Allen, Anderson, Arav, Arnaud, Becker, Bolzonella, Brotherton, C. S. Stalin, Dai, Dickey, DiPompeo, Fan, Gallagher, Gallagher, Gallagher, Ganguly, Ghosh, Gibson, Giustini, Goodrich, Green, Green, Green, Green, Gupta, Hazard, Hewett, Hines, Hutsemekers, Just, Knigge, Laor, Laor, Lavalley, Lonsdale, Mathur, Miller, Murray, Oke, P. Petitjean, Piconcelli, Pierre, Pierre, Priddey, R. Srianand, Reichard, Richards, Sabra, Schmidt, Shankar, Sharp, Sprayberry, Srianand, Srianand, Stalin, Steffen, Stern, Stern, Streblyanska, Tolea, Trump, Urrutia, Wampler, Wang, Weymann, Willott   +65 more
core   +3 more sources

H i Lyα Emission from a Metal-poor Cool Stream Fueling an Early Dusty Starburst

The Astrophysical Journal
The GAMA J0913−0107 system is a rare conjunction of a submillimeter galaxy (SMG) at z ≈ 2.7 and two background QSOs with projected separations
Kevin Hall, Hai Fu
doaj   +1 more source

The Star Formation Across Cosmic Time (SFACT) Survey. II. The First Catalog from a New Narrowband Survey for Emission-line Objects

The Astronomical Journal, 2023
Star Formation Across Cosmic Time (SFACT) is a new narrowband (NB) survey designed to detect faint emission-line galaxies (ELGs) and QSOs over a broad range of redshifts.
Jennifer Sieben, David J. Carr, John J. Salzer, Alec S. Hirschauer   +3 more
doaj   +1 more source

Topological transport of a classical droplet in a lattice of time

Natural Sciences, Volume 4, Issue 4, October 2024.
A gravitationally bouncing droplet may lock into a 2T periodic motion, where T is the period of the drive, and be described as a classical time crystal. By modulating the drive the droplet may be pumped from one site to the neighbouring site along the time lattice. The pumping process of such topological time crystal pump is characterised by an integer
Tapio Simula, Niels Kjærgaard, Tilman Pfau   +2 more
wiley   +1 more source

X-ray Spectroscopy of QSOs with Broad Ultraviolet Absorption Lines [PDF]

, 2001
For the population of QSOs with broad ultraviolet absorption lines, we are just beginning to accumulate X-ray observations with enough counts for spectral analysis at CCD resolution. From a sample of eight QSOs [including four Broad Absorption Line (BAL)
Bade N., Brinkmann W., G. Chartas, G. P. Garmire, S. C. Gallagher, W. N. Brandt   +5 more
core   +3 more sources

Confrontation of the Magnetically Arrested Disc Scenario with Observations of FR II Sources

Frontiers in Astronomy and Space Sciences, 2017
The main aim of our work was to check whether powers of jets in FR II radio galaxies (RGs) and quasars (QSOs) can be reproduced by the Magnetically Arrested Disc (MAD) scenario.
Katarzyna Rusinek, Marek Sikora
doaj   +1 more source