Large-scale clustering of galaxies in general relativity
Physical Review D, 2012 Several recent studies have shown how to properly calculate the observed clustering of galaxies in a relativistic context, and uncovered corrections to the Newtonian calculation that become significant on scales near the horizon. Here, we retrace these calculations and show that, on scales approaching the horizon, the observed galaxy power spectrum ...
Christopher M. Hirata +3 more
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Observational constraints on general relativistic energy conditions, cosmic matter density and dark energy from X-ray clusters of galaxies and type-Ia supernovae [PDF]
, 2003 New observational constraints on the cosmic matter density Ωm and an effectively redshift-independent equation of state parameter wx of the dark energy are obtained while simultaneously testing the strong and null energy conditions of general relativity ...
P. Schuecker +5 more
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Star Cluster Demographics. I. A General Framework and Application to the Antennae Galaxies [PDF]
The Astronomical Journal, 2007 We present a framework for understanding the demographics of star cluster systems, and develop a toy model which incorporates a universal initial power law mass function, selected formation histories, selected disruption laws, and a convolution with common artifacts and selection effects found in observational data. The model confirms that the observed
Rupali Chandar +3 more
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Testing general relativity: New measurements of gravitational redshift in galaxy clusters [PDF]
Astronomy & Astrophysics, 2023 Context.The peculiar velocity distribution of cluster member galaxies provides a powerful tool to directly investigate the gravitational potentials within galaxy clusters and to test the gravity theory on megaparsec scales.Aims.We exploit spectroscopic galaxy and galaxy cluster samples extracted from the latest releases of the Sloan Digital Sky Survey (
D. Rosselli +4 more
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An investigation of cooling flows and general cluster properties from an X-ray image deprojection analysis of 207 clusters of galaxies [PDF]
, 1997 We present an X-ray image deprojection analysis of Einstein Observatory imaging data on 207, clusters of galaxies. The resulting radial profiles for luminosity, temperature, and electron density variations are determined from the cluster surface ...
David White, C. Jones, W. Forman
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New perspective on galaxy clustering as a cosmological probe: General relativistic effects [PDF]
Physical Review D, 2009 10 pages, 2 figures, accepted for publication in Physical Review ...
Jaiyul Yoo +3 more
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Hydrodynamical simulations of galaxy clusters in dark energy cosmologies - I. General properties [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 15 pages, 11 figures, 4 tables, published in MNRAS.
Klaus Dolag +6 more
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Gas, Iron, and Gravitational Mass in Galaxy Clusters: The General Lack of Cluster Evolution at z < 1.0 [PDF]
Publications of the Astronomical Society of Japan, 2000 We have analyzed the ASCA data of 29 nearby clusters of galaxies systematically, and obtained temperatures, iron abundances, and X-ray luminosities of their intracluster medium (ICM). We also estimated the ICM mass using the β model, and then evaluated the iron mass contained in the ICM and derived the total gravitating mass. This gives the largest and
Makoto Hattori +4 more
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Testing non-local gravity by clusters of galaxies [PDF]
The European Physical Journal C, 2022 Extended theories of gravity have been extensively investigated during the last thirty years, aiming at fixing infrared and ultraviolet shortcomings of General Relativity and of the associated Λ\documentclass[12pt]{minimal} \usepackage{amsmath ...
F. Bouchè +3 more
semanticscholar +1 more source
Gravitational theory of cosmology, galaxies and galaxy clusters [PDF]
The European Physical Journal C, 2020 A modified gravitational theory explains early universe and late time cosmology, galaxy and galaxy cluster dynamics. The modified gravity (MOG) theory extends general relativity (GR) by three extra degrees of freedom: a scalar field G, enhancing the ...
J. Moffat
semanticscholar +1 more source