Results 1 to 10 of about 5,279,442 (297)
The Gamma-Ray Luminosity Function of Flat-spectrum Radio Quasars
The Astrophysical JournalWe have utilized the largest sample of gamma-ray-selected Fermi flat-spectrum radio quasars (FSRQs) ever used (519 sources) to construct the luminosity function and its evolution through cosmic history. In addition to spanning large redshift (0
Garima Rajguru +4 more
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The CNOC2 Field Galaxy Luminosity Function. I. A Description of Luminosity Function Evolution
The Astrophysical Journal, 1999 We examine the evolution of the galaxy luminosity function (LF) using a sample of over 2000 galaxies, with 0.12 < z < 0.55 and 17.0 < Rc < 21.5, drawn from the Canadian Network for Observational Cosmology Field Galaxy Redshift Survey (CNOC2), at present the largest such sample at intermediate redshifts. We use UBVRcIc photometry to classify
Lin, H. +7 more
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A NEW LUMINOSITY FUNCTION FOR GALAXIES AS GIVEN BY THE MASS-LUMINOSITY RELATIONSHIP [PDF]
The Astronomical Journal, 2008 The search for a luminosity function for galaxies both alternative or companion to a Schechter function is a key problem in the reduction of data from catalogs of galaxies. Two luminosity functions for galaxies can be built starting from two distributions of mass as given by the fragmentation. A first overall distribution function is the Kiang function
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Evolution of the Luminosity Function [PDF]
Symposium - International Astronomical Union, 1986 In this review, the currently published, complete, spectroscopically identified samples of quasars are assembled to produce a composite luminosity function, independent of evolutionary assumptions. Two interpretations of the change with cosmic time provide reasonable fits to the data.
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The Quasar Luminosity Function [PDF]
Symposium - International Astronomical Union, 1996 Recent results at high redshifts are briefly reviewed. An analysis of the evolution of the quasar luminosity function based on the recently published Hawkins & Véron (1995) variability-selected quasar sample is presented. The results support the conclusions of earlier work that suggested the simple two power law luminosity function, of invariant ...
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New Galaxy UV Luminosity Constraints on Warm Dark Matter from JWST
The Astrophysical JournalWe exploit the recent James Webb Space Telescope (JWST) determination of galaxy UV luminosity functions over the redshift range z = 9–14.5 to derive constraints on warm dark matter (WDM) models. The delayed structure formations in WDM universes make high-
Bin Liu, Huanyuan Shan, Jiajun Zhang
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MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3
The Astrophysical JournalCosmic variance introduces significant uncertainties into galaxy number density properties when surveying the high-redshift Universe with a small volume.
Ke Ma +10 more
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ВЛИЯНИЕ ГРАВИТАЦИОННОГО ЛИНЗИРОВАНИЯ НА ФУНКЦИЮ СВЕТИМОСТИ КВАЗАРОВ
Odessa Astronomical Publications, 2011 The function of quasar distribution on apparent brightness is discussed. This function is found on base of suggestion that quasars, at least partly, are strong gravitational lensing images of the active nuclei of distant galaxies.
Ю. Л. Бухмастова
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Theoretical Systematics in Testing the Cosmological Principle with the Kinematic Quasar Dipole
The Astrophysical Journal, 2023 The Cosmological Principle (CP) is part of the foundation that underpins the standard model of the Universe. In the era of precision cosmology, when stress tests of the standard model are uncovering various tensions and possible anomalies, it is critical
Caroline Guandalin +3 more
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Luminosity Function of Quasars at 1.0 < z < 3.5 from SDSS and DESI
The Astrophysical JournalWe present a study of the evolution of type 1 quasars at 1.0
Gaocheng Yin +56 more
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