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The amplitude of the initial density fluctuation spectrum from lensing statistics

Eelco van Kampen
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Abstract

A complete catalogue of galaxy cluster models can be used to constrain cosmological parameters like $σ_8$, 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 $σ_8$ for the standard Cold Dark Matter scenario within an Einstein-de Sitter universe.

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Eelco van Kampen. 1996-01-22. The amplitude of the initial density fluctuation spectrum from lensing statistics. https://arxiv.org/abs/astro-ph/9601113

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