Results 201 to 210 of about 74,681 (258)
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2022
Abstract Chapter 24 introduces the field of cosmology. It starts by considering Olber’s paradox and then constructs a simple Newtonian cosmology model. It then discusses the cosmological principle and Weyl’s postulate as assumptions that go into formulating relativistic cosmology.
Ray d’Inverno, James Vickers
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Abstract Chapter 24 introduces the field of cosmology. It starts by considering Olber’s paradox and then constructs a simple Newtonian cosmology model. It then discusses the cosmological principle and Weyl’s postulate as assumptions that go into formulating relativistic cosmology.
Ray d’Inverno, James Vickers
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General Relativity and Gravitation, 1955
Reprinted from Phys. Rev. (2) 98, 1123-1126 (1955; Zbl 0066.22204).
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Reprinted from Phys. Rev. (2) 98, 1123-1126 (1955; Zbl 0066.22204).
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PROBLEMS OF RELATIVISTIC COSMOLOGY
Soviet Physics Uspekhi, 1963CONTENTS I. Features of cosmological solutions of the gravitational equations 495 1. Introduction 495 2. General solution with fictitious singularity 496 3. Anisotropic solution with singularity 500 4. Quasi-isotropic solution 504 5. General conclusions concerning singularities of cosmological solutions 505 II.
E.M. Lifshitz, Isaak M. Khalatnikov
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Relativistic hierarchical cosmology
Astrophysics and Space Science, 1975An account of hierarchical cosmology is given that is based on general relativity, being split up into three pieces for ease of assimilation. Part II will treat of specific solutions relevant to the observed Universe, while Part III compares these models with available empirical data in an effort to pick a model that agrees with observation.
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2012
Cosmology has been transformed by dramatic progress in high-precision observations and theoretical modelling. This book surveys key developments and open issues for graduate students and researchers. Using a relativistic geometric approach, it focuses on the general concepts and relations that underpin the standard model of the Universe.
Ellis, George F. R. +2 more
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Cosmology has been transformed by dramatic progress in high-precision observations and theoretical modelling. This book surveys key developments and open issues for graduate students and researchers. Using a relativistic geometric approach, it focuses on the general concepts and relations that underpin the standard model of the Universe.
Ellis, George F. R. +2 more
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Physics Today, 1967
SOME OF THE MOST exciting recent developments in physics have been in the realms of the very small and the very large. Chief among the latter was the discovery of “quasars,” which has quadrupled our depth penetration of the universe (if quasars are where most astronomers think they are), and which has also stimulated the possibly irrelevant but ...
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SOME OF THE MOST exciting recent developments in physics have been in the realms of the very small and the very large. Chief among the latter was the discovery of “quasars,” which has quadrupled our depth penetration of the universe (if quasars are where most astronomers think they are), and which has also stimulated the possibly irrelevant but ...
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Some Relativistic Cosmological Models
General Relativity and Gravitation, 1998The author's dissertation from 1966 is published here for the first time in a journal. The now famous ``Kantowski-Sachs models'' in cosmology were deduced under the supervisorship of R. Sachs. The commutation relations and Killing equations then require the metric to have the following form \[ ds^2= dt^2- X(t)^2 dr^2- Y(t)^2 g_{AB} dx^A dx^B \qquad (A ...
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