Quasar Absorption-Line Number Density in a Closed, Λ-Dominated Universe |
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| Authors: | J M Overduin W Priester |
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| Institution: | 1. Gravity Probe B, Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA, 94305-4085, U.S.A.
2. Institut für Astrophysik und Extraterrestrische Forschung, Universit?t Bonn, Auf dem Hügel 71, D-53121, Bonn, Germany
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| Abstract: | We investigate the dependence of the line number density in the Lyman α forest on cosmological and evolutionary parameters. Recent data from eight high-redshift quasars obtained with VLT/UVES imply that either there is very strong evolution in the absorber population, or we live in a “nearly flat” closed universe which is more heavily vacuum-dominated than standard ΛCDM models.Wolfgang Priester (22 April 1924–9 July 2005) |
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| Keywords: | Quasars absorption lines cosmology cosmological parameters |
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