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

被引：0
作者：
J. M. Overduin
W. Priester
机构：
[1] Stanford University,Gravity Probe B, Hansen Experimental Physics Laboratory
[2] Universität Bonn,Institut für Astrophysik und Extraterrestrische Forschung
来源：
Astrophysics and Space Science | 2006年 / 305卷
关键词：
Quasars; absorption lines; cosmology; cosmological parameters;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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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页码：159 / 163
页数：4
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