Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· References in the article
· Citations to the Article (207) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
An evolution free test for non-zero cosmological constant
Authors:
Alcock, C.; Paczynski, B.
Affiliation:
AA(Institute for Advanced Study, Princeton, N.J.), AB(California, University, Berkeley, Calif.; Princeton University, New Observatory, Princeton, N.J.; Polska Akademia Nauk, Centrum Astronomiczne, Warsaw, Poland)
Publication:
Nature, vol. 281, Oct. 4, 1979, p. 358, 359. (Nature Homepage)
Publication Date:
10/1979
Category:
Astrophysics
Origin:
STI
Comment:
A&AA ID. AAA026.162.004
DOI:
10.1038/281358a0
Bibliographic Code:
1979Natur.281..358A

Abstract

An evolution-free cosmological test that is a sensitive estimator of the cosmological constant is proposed. The test involves the evaluation of the ratio between the differences in the redshifts of an expanding spherically symmetric distribution of radiation-emitting objects and the product of their distance with the angular radius of their distribution on the sky assuming a homogeneous, isotropic cosmology described by the Robertson-Walker metric. In the case where the cosmological constant is not equal to zero, this ratio is shown to vary significantly with a change in object distance and other parameters. Difficulties associated with the peculiar velocities and clustering of galaxies, the presumable test objects, are discussed.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints