Results 91 to 100 of about 81,623 (245)
An overview on the quasar redshifts
Revista Técnica de la Facultad de Ingeniería, 2011 An overview of the foundations of modem cosmology a well as the controversies about physical association between high-red shift quasi-stellar objects and low-red shift galaxies are presented. This kind of evidence challenges the current velocity-distance
Williams Pitter +4 more
doaj
A Southern Photometric Quasar Catalog from the Dark Energy Survey Data Release 2
The Astrophysical Journal Supplement Series, 2022 We present a catalog of 1.4 million photometrically selected quasar candidates in the southern hemisphere over the ∼5000 deg ^2 Dark Energy Survey (DES) wide survey area. We combine optical photometry from the DES second data release (DR2) with available
Qian Yang, Yue Shen
doaj +1 more source
The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS) [PDF]
, 2019 We present the results of the Extremely Luminous Quasar Survey in the $3\pi$ survey of the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS; PS1).
Fan, Xiaohui +9 more
core +2 more sources
WITNESSING THE BIRTH OF A QUASAR [PDF]
The Astronomical Journal, 2010 27 pages, 5 figures. Updated references.
Takamitsu Tanaka +2 more
openaire +2 more sources
Quasars in the COSMOS Field [PDF]
The Astrophysical Journal, 2006 Accepted for publication in ApJ; emulateapj style; 25 pages, 13 figures, 4 ...
Prescott, M. K. M. +3 more
openaire +5 more sources
Comment on "Biases in the Quasar Mass-Luminosity Plane" [PDF]
, 2010 Comment on "Biases in the Quasar Mass-Luminosity Plane"Comment: Comment on Biases in the Quasar Mass-Luminosity Plane; 3 ...
Elvis, Martin, Steinhardt, Charles
core
The Color Variability of Quasars
, 2011 We quantify quasar color-variability using an unprecedented variability database - ugriz photometry of 9093 quasars from SDSS Stripe 82, observed over 8 years at ~60 epochs each. We confirm previous reports that quasars become bluer when brightening.
Abell +72 more
core +1 more source
Russian VLBI network “Quasar”: Current status and outlook
Geodesy and Geodynamics, 2019 This paper presents the past, present and future status of the Russian VLBI network “Quasar”. This network has been developed for at least 20 years by the Institute of Applied Astronomy of the Russian Academy of Sciences (IAA RAS).
N. Shuygina +17 more
doaj +1 more source
Calibrating the Galaxy Halo - Black Hole Relation Based on the Clustering of Quasars
, 2004 The observed number counts of quasars may be explained either by long-lived activity within rare massive hosts, or by short-lived activity within smaller, more common hosts.
Abraham Loeb +4 more
core +1 more source
NONO Maintains SREBP‐Regulated Cholesterol Biosynthesis via RNA Binding in Neuroblastoma
The FASEB Journal, Volume 39, Issue 18, 30 September 2025.We identified that NONO plays a role in maintaining sterol regulatory element—binding protein (SREBF)‐regulated cholesterol biosynthesis in high‐risk neuroblastoma. A small molecule ligand (R)‐SKBG‐1 that modulates the RNA binding activity of NONO significantly decreased the SREBF‐cholesterol pathway, highlighting the importance of manipulating RNA ...
Song Zhang +10 more
wiley +1 more source