What We Talk about When We Talk about Blazars?
Frontiers in Astronomy and Space Sciences, 2017 After the discovery of powerful relativistic jets from Narrow-Line Seyfert 1 Galaxies, and the understanding of their similarity with those of blazars, a problem of terminology was born.
Luigi Foschini
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Quasar clustering: evidence for an increase with redshift and implications for the nature of AGNs [PDF]
, 1997 The evolution of quasar clustering is investigated with a new sample of 388 quasars with 0 ...
Bellenger R. +17 more
core +3 more sources
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: a tomographic measurement of cosmic structure growth and expansion rate based on optimal redshift weights [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We develop a new method, which is based on the optimal redshift weighting scheme, to extract the maximal tomographic information of baryonic acoustic oscillations (BAO) and redshift space distortions (RSD) from the extended Baryon Oscillation ...
Gong-Bo Zhao +30 more
semanticscholar +1 more source
Construction Tender Subcontract Selection using Case-based Reasoning
Construction Economics and Building, 2012 Obtaining competitive quotations from suitably qualified subcontractors at tender tim n significantly increase the chance of w1nmng a construction project.
Due Luu, Wily Sher
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Model simulation of heavy metals in river systems: case study the Negro river basin
Revista Facultad de Ingeniería Universidad de Antioquia, 2019 Este trabajo describe la aplicación de un modelo de calidad de agua para la simulación de metales pesados en sistemas fluviales. La estrategia propuesta incluye un enfoque de modelación 1D con la extensión del modelo QUASAR-ADZ para la representación del
Carlos Alberto Palacio-Tobón +3 more
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Cosmology With Quasars: Predictions for eROSITA From a Quasar Hubble Diagram
Frontiers in Astronomy and Space Sciences, 2020 The effort for understanding the matter and energy content of the Universe and its evolution relies on different probes, such as cosmic background radiation, cluster lensing, supernovae.
Elisabeta Lusso, Elisabeta Lusso
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Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6 [PDF]
Astrophysical Journal, 2018 We present new measurements of the quasar luminosity function (LF) at z ∼ 6 over an unprecedentedly wide range of the rest-frame ultraviolet luminosity M1450 from −30 to −22 mag.
Y. Matsuoka +46 more
semanticscholar +1 more source
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses XIII: Time delays and 9-yr optical monitoring of the lensed quasar RX J1131-1231 [PDF]
, 2013 We present the results from nine years of optically monitoring the gravitationally lensed z=0.658 quasar RX J1131-1231. The R-band light curves of the four individual images of the quasar were obtained using deconvolution photometry for a total of 707 ...
A. M. Mosquera +61 more
core +2 more sources
Statistics of Galactic-scale Quasar Pairs at Cosmic Noon
The Astrophysical Journal, 2023 The statistics of galactic-scale quasar pairs can elucidate our understanding of the dynamical evolution of supermassive black hole (SMBH) pairs, the duty cycles of quasar activity in mergers, or even the nature of dark matter, but they have been ...
Yue Shen +10 more
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Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars [PDF]
, 2006 We present low-resolution ultraviolet spectra of 14 low redshift ...
Ari Laor +38 more
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