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 ...
Favio Neira +3 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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Quadruply-imaged quasars: some general features [PDF]
arXiv: Astrophysics of Galaxies, 2020 11 pages, 12 figures, accepted for publication in Journal of the Korean Astronomical Society (JKAS)
Nguyen Bich Ngoc +8 more
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Cosmic ray generation by quasar remnants: constraints and implications [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 The quasar remnant cores of nearby giant elliptical galaxies NGC 4486 (M87), NGC 1399, NGC 4649 and NGC 4472 are the sites of supermassive (greater than one billion solar masses) black holes. These objects are investigated as to the viability of the conjecture that they could harbor compact dynamos capable of generating the highest energy cosmic rays ...
Michael Loewenstein +2 more
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Astroinformatics of galaxies and quasars: a new general method for photometric redshifts estimation [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 36 pages, 22 figures and 8 ...
Giuseppe Longo +5 more
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CONSTRAINING SUB-PARSEC BINARY SUPERMASSIVE BLACK HOLES IN QUASARS WITH MULTI-EPOCH SPECTROSCOPY. I. THE GENERAL QUASAR POPULATION [PDF]
The Astrophysical Journal, 2013 replaced with accepted version; ApJ, in ...
Shen, Yue +3 more
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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.
Cheng Zhao +13 more
openaire +5 more sources
Cosmic ray and TeV gamma ray generation by quasar remnants [PDF]
AIP Conference Proceedings, 2001 Results from new broadband (radio to X-ray) high-resolution imaging studies of the dormant quasar remnant cores of nearby giant elliptical galaxies are now shown to permit the harboring of compact dynamos capable of generating the highest energy cosmic ray particles and associated curvature radiation of TeV photons.
Michael Loewenstein, Elihu Boldt
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Weak13CO in the Cloverleaf quasar: evidence for a young, early generation starburst [PDF]
Astronomy and Astrophysics, 2010 7 pages, 5 figures, accepted for publication in A&A (Main Journal)
Carsten Henkel +5 more
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PHOTOMETRIC REDSHIFTS AND QUASAR PROBABILITIES FROM A SINGLE, DATA-DRIVEN GENERATIVE MODEL [PDF]
The Astrophysical Journal, 2012 We describe a technique for simultaneously classifying and estimating the redshift of quasars. It can separate quasars from stars in arbitrary redshift ranges, estimate full posterior distribution functions for the redshift, and naturally incorporate flux uncertainties, missing data, and multi-wavelength photometry.
Donald P. Schneider +11 more
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