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Title:
The cosmological constant
Authors:
Carroll, Sean M.; Press, William H.; Turner, Edwin L.
Affiliation:
AA(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AB(Harvard-Smithsonian Center for Astrophysics, Cambridge, MA), AC(Princeton Univ. Observatory, NJ)
Publication:
In: Annual review of astronomy and astrophysics. Vol. 30 (A93-25826 09-90), p. 499-542. (Annual Reviews Homepage)
Publication Date:
00/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
COSMOLOGY, GRAVITATIONAL LENSES, HUBBLE CONSTANT, RELATIVISTIC THEORY, COMPUTATIONAL ASTROPHYSICS, GRAVITATIONAL FIELDS, UNIVERSE
DOI:
10.1146/annurev.aa.30.090192.002435
Bibliographic Code:
1992ARA&A..30..499C

Abstract

The cosmological constant problem is examined in the context of both astronomy and physics. Effects of a nonzero cosmological constant are discussed with reference to expansion dynamics, the age of the universe, distance measures, comoving density of objects, growth of linear perturbations, and gravitational lens probabilities. The observational status of the cosmological constant is reviewed, with attention given to the existence of high-redshift objects, age derivation from globular clusters and cosmic nuclear data, dynamical tests of OmegaLambda, quasar absorption line statistics, gravitational lensing, and astrophysics of distant objects. Finally, possible solutions to the physicist's cosmological constant problem are examined.

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