The amplitude of the initial density fluctuation spectrum from lensing statistics

Eelco van Kampen

The amplitude of the initial density fluctuation spectrum from lensing statistics

Astrophysics 2007-05-23 v1

Authors: Eelco van Kampen

Abstract

A complete catalogue of galaxy cluster models can be used to constrain cosmological parameters like $\sigma_8$ , the amplitude of the initial density fluctuation spectrum. We focus here on two strong lensing statistics for clusters of galaxies: the fraction of rich Abell clusters that are critical to lensing, and the abundance of arcs in such clusters, especially the X-ray luminous ones. The specific aim of this paper is to constrain $\sigma_8$ for the standard Cold Dark Matter scenario within an Einstein-de Sitter universe.

Keywords

gravitational lensing cosmological parameters sigma_8 Abell clusters arc abundance

Cite

@article{arxiv.astro-ph/9601113,
  title  = {The amplitude of the initial density fluctuation spectrum from lensing statistics},
  author = {Eelco van Kampen},
  journal= {arXiv preprint arXiv:astro-ph/9601113},
  year   = {2007}
}

Comments

6 pages including 3 figures, gzip'ed and uuencoded Postscript, To appear in proceedings "Mapping, Measuring and Modelling the Universe", Valencia 1995, eds. P. Coles and V. Martinez

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