Results 91 to 100 of about 365 (183)
Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]
Sci Adv, 2023 Shen L +9 more
europepmc +1 more source
Recurrent Multiyear Mg II Broad Absorption Line Variability in SDSS J1333+0012
The Astrophysical JournalWe present a long-term spectroscopic study of broad absorption line (BAL) variability in the quasar J1333+0012 ( z _em = 0.9197) using an extensive multiepoch dataset spanning nearly two decades.
M. Vivek +5 more
doaj +1 more source
The Astrophysical Journal LettersWe present the first results from a program searching for extended Ly α halos around high-redshift ( z ≳ 6.5) quasars using the red channel of the Keck Cosmic Web Imager (KCWI).
Raymond P. Remigio +8 more
doaj +1 more source
The Astrophysical JournalFlows driven by photons have been studied for almost a century, and a quantitative description of the radiative forces on atoms and ions is important for understanding a wide variety of systems with outflows and accretion disks, such as active galactic ...
Aylecia S. Lattimer, Steven R. Cranmer
doaj +1 more source
Reorienting Our Perspective of Broad Absorption Line Quasars
, 2012 Proceedings from the conference "AGN Winds in Charleston", October ...
DiPompeo, Michael A. +3 more
openaire +2 more sources
Molecular Outflow in the Reionization-epoch Quasar J2054-0005 Revealed by OH 119 μm Observations
The Astrophysical JournalMolecular outflows are expected to play a key role in galaxy evolution at high redshift. To study the impact of outflows on star formation at the epoch of reionization, we performed sensitive Atacama Large Millimeter/submillimeter Array observations of ...
Dragan Salak +10 more
doaj +1 more source
X-ray observations of broad absorption-line quasars
The Astrophysical Journal, 1984 The present 0.1-4 keV observer frame data was obtained for three broad absorption-line quasars with the imaging proportional counter on the Einstein Observatory. Data for one object, UM 232, are sufficiently good to tell that absorption at 1 keV is unimportant (quasar rest frame), which leads to an upper limit to the column density of absorbing gas of ...
openaire +1 more source
The Astrophysical JournalActive galactic nucleus (AGN) feedback is a key ingredient in galaxy formation models and simulations. From an observational point of view, however, the channels of AGN feedback coupling to the interstellar medium (ISM) and circumgalactic medium (CGM ...
Weimin Yi +11 more
doaj +1 more source
UEG Week 2025 Oral Presentations
United European Gastroenterology Journal, Volume 13, Issue S8, Page S7-S188, October 2025.
wiley +1 more source
AllBRICQS: The Discovery of Luminous Quasars in the Northern Hemisphere
The Astrophysical Journal Supplement SeriesWe present the second catalog of bright quasars from the All-sky BRIght, Complete Quasar Survey (AllBRICQS), focusing on spectroscopically observed quasars in the Northern Hemisphere with Galactic latitude ∣ b ∣ > 10°.
Yunyi Choi +18 more
doaj +1 more source