Quasar Absorption-Line Number Density in a Closed, Λ-Dominated Universe

Details Quasar Absorption-Line Number Density in a Closed, Λ-Dominated Universe Quasar Absorption-Line Number Density in a Closed, Λ-Dominated Universe

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.305..159o&link_type=abstract

Astrophysics and Space Science, Volume 305, Issue 2, pp.159-163

Mathematics

Logic

Quasars, Absorption Lines, Cosmology, Cosmological Parameters

Scientific paper

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.

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