Results 21 to 30 of about 247,102 (346)
Padé Approximant and Minimax Rational Approximation in Standard Cosmology
Galaxies, 2016 The luminosity distance in the standard cosmology as given by ΛCDM and, consequently, the distance modulus for supernovae can be defined by the Padé approximant.
Lorenzo Zaninetti
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Radio Luminosity Functions [PDF]
Symposium - International Astronomical Union, 1996 Luminosity functions give the space densities of source populations as functions of spectral luminosity. They constrain source physics, clustering, cosmological evolution, and contributions to the radiation background. Extragalactic radio sources span eight decades of luminosity, so dividing them into luminosity ranges effectively separates them by ...
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The white dwarf luminosity function. I. Statistical errors and alternatives [PDF]
, 2006 Over the years, several methods have been proposed to compute galaxy luminosity functions, from the most simple ones -counting sample objects inside a given volume- to very sophisticated ones -like the C- method, the STY method or the Choloniewski method,
Abazajian +59 more
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The Truncated Lognormal Distribution as a Luminosity Function for SWIFT-BAT Gamma-Ray Bursts
Galaxies, 2016 The determination of the luminosity function (LF) in Gamma ray bursts (GRBs) depends on the adopted cosmology, each one characterized by its corresponding luminosity distance.
Lorenzo Zaninetti
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Luminosities of Carbon-rich Asymptotic Giant Branch stars in the Milky Way [PDF]
, 2013 Stars evolving along the Asymptotic Giant Branch can become Carbon-rich in the final part of their evolution. They replenish the inter-stellar medium with nuclear processed material via strong radiative stellar winds.
Cristallo, Sergio, Guandalini, Roald
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Fast retinal potential luminosity functions
Vision Research, 1971 Abstract The adaptation dependence of high frequency signals (fast retinal potentials or FRP's) was analyzed from measures taken from the human cornea. Narrow band chromatic stimuli were presented to two normal S's under photopic, mesopic, and scotopic adaption conditions.
Experimental Psychology Division U.S. Army Medical Research Laboratory, Fort Knox, Kentucky 40121, U.S.A. ( host institution ) +2 more
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Tracing Galaxy Evolution by Their Present-Day Luminosity Function
Open Astronomy, 2011 Galaxy luminosity functions are derived for different morphological types and various colors of galaxies, to trace the evolutionary effects which a priori should be different for void and supercluster galaxies.
Tempel E.
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On the Number of Galaxies at High Redshift
Galaxies, 2015 The number of galaxies at a given flux as a function of the redshift, z, is derived when the z-distance relation is non-standard. In order to compare different models, the same formalism is also applied to the standard cosmology.
Lorenzo Zaninetti
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Beyond the Galaxy Luminosity Function [PDF]
Publications of the Astronomical Society of Australia, 2004 AbstractWith the advent of large-scale surveys (i.e. Legacy Surveys) it is now possible to start looking beyond the galaxy luminosity function (LF) to more detailed statistical representations of the galaxy population, i.e multivariate distributions.
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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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