Quadruply-imaged quasars: some general features [PDF]
, 2020 11 pages, 12 figures, accepted for publication in Journal of the Korean Astronomical Society (JKAS)
P. Tuan-Anh +8 more
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The general relativistic theory of quasars [PDF]
, 2000 The paper was a preliminary and rejected by the author attempt to describe compact relativistic objects.
Zahid Zakir
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Testing general relativity on cosmological scales at redshift z ∼ 1.5 with quasar and CMB lensing [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We test general relativity (GR) at the effective redshift $\bar{z} \sim 1.5$ by estimating the statistic EG, a probe of gravity, on cosmological scales $19 - 190\, h^{-1}{\rm Mpc}$. This is the highest redshift and largest scale estimation of EG so far.
Yucheng Zhang +12 more
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QUANTIFYING QUASAR VARIABILITY AS PART OF A GENERAL APPROACH TO CLASSIFYING CONTINUOUSLY VARYING SOURCES [PDF]
The Astrophysical Journal, 2009 Robust fast methods to classify variable light curves in large sky surveys are becoming increasingly important. While it is relatively straightforward to identify common periodic stars and particular transient events (supernovae, novae, microlensing), there is no equivalent for non-periodic continuously varying sources (quasars, aperiodic stellar ...
S. Kozłowski +10 more
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General Formulation of the Gravitational Lens and Analysis of the Multiple Quasar PG1115 + 080 [PDF]
Progress of Theoretical Physics, 1988 Hiroshi Yoshida, M. Omote
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Astroinformatics of galaxies and quasars: a new general method for photometric redshifts estimation
, 2012 The catalogs are available as Cone Searches in the Virtual Observatory. Contact olaurino@head.cfa.harvard.edu AbstractWith the availability of the huge amounts of data produced by current and future large multiband photometric surveys, photometric redshifts have become a crucial tool for extragalactic astronomy and cosmology. In this paper we present a
Omar Laurino
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The 1905 Einstein equation in a general mathematical analysis model of quasars
, 2010 The 1905 wave equation of Albert Einstein is a model that can be used in many areas, such as physics, applied mathematics, statistics, quantum chaos and financial mathematics, etc. I will give a proof from the equation of A. Einstein’s paper “Zur Elektrodynamik bewegter Körper†it will be done by removing the variable time (t) and the constant (c)
Byron E. Bell
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A quasar microlensing light-curve generator for LSST [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We present a tool to generate mock quasar microlensing light curves and sample them according to any observing strategy. An updated treatment of the fixed and random velocity components of observer, lens, and source is used, together with a proper alignment with the external shear defining the magnification map caustic ...
Georgios Vernardos +2 more
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A Generative Model for Quasar Spectra
The Astrophysical Journal, 2022 Abstract We build a multi-output generative model for quasar spectra and the properties of their black hole engines, based on a Gaussian process latent-variable model. This model treats every quasar as a vector of latent properties such that the spectrum and all physical properties of the quasar are associated with non-linear functions ...
Anna–Christina Eilers +5 more
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Systematic search for gravitational mirages among general quasar samples
, 1993 Not ...
O. Moreau +4 more
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