Article (Scientific journals)
Constraints on Cosmological Parameters from the Analysis of the Cosmic Lens All Sky Survey Radio-Selected Gravitational Lens Statistics
Chae, K.-H.; Biggs, A. D.; Blandford, R. D. et al.
2002In Physical Review Letters, 89 (15), p. 151301
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Keywords :
Cosmology; Dark Matter; Equations Of State; Gravitational Lenses; Radio Galaxies; Sky Surveys (Astronomy); Statistical Analysis; Universe
Abstract :
[en] We derive constraints on cosmological parameters and the properties of the lensing galaxies from gravitational lens statistics based on the final Cosmic Lens All Sky Survey data. For a flat universe with a classical cosmological constant, we find that the present matter fraction of the critical density is [Omega][SUB]m[/SUB]=0.31[SUB]-0.14[/SUB](sup +0.27) (68%)[SUB]-0.10[/SUB](sup +0.12) (syst). For a flat universe with a constant equation of state for dark energy w=p[SUB]x)(pressure[/SUB]/[rho][SUB]x[/SUB](energy density), we find w<-0.55[SUB]-0.11[/SUB](sup +0.18) (68%).
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Chae, K.-H.;  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire
Biggs, A. D.;  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire
Blandford, R. D.;  California Institute of Technology, Pasadena
Browne, I. W.;  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire
de Bruyn, A. G.;  NFRA
Fassnacht, C. D.;  Space Telescope Science Institute
Helbig, Phillip  ;  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire
Jackson, N. J.;  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire
King, L. J.;  University of Bonn, Auf dem Hugel
Koopmans, L. V.;  California Institute of Technology, Pasadena)
Mao, S.
Marlow, D. R.
McKean, J. P.
Myers, S. T.
Norbury, M.
Pearson, T. J.
Phillips, P. M.
Readhead, A. C.
Rusin, D.
Sykes, C. M.
Wilkinson, P. N.
Xanthopoulos, E.
York, T.
More authors (13 more) Less
Language :
English
Title :
Constraints on Cosmological Parameters from the Analysis of the Cosmic Lens All Sky Survey Radio-Selected Gravitational Lens Statistics
Publication date :
01 October 2002
Journal title :
Physical Review Letters
ISSN :
0031-9007
eISSN :
1079-7114
Publisher :
American Physical Society, New York, United States - New York
Volume :
89
Issue :
15
Pages :
151301
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
TMR Program, Research Contract ERBFMRXCT960034 'CERES'
Funders :
EU - European Commission
Available on ORBi :
since 07 February 2020

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