Gravitational Lensing Statistics by Galaxy Clusters with Smoothness Parameter Depending on z
Monica Valencia, Leonardo Castaneda
TL;DR
This paper investigates how the smoothness parameter influences gravitational lensing statistics by galaxy clusters across different cosmologies, using the Dyer-Roeder equation and NFW profiles.
Contribution
It introduces a detailed analysis of the smoothness parameter's effect on lensing, incorporating the Dyer-Roeder equation and NFW profiles with the Press-Schechter formalism.
Findings
The smoothness parameter significantly affects the optical depth for multiple images.
Different cosmological models show varying lensing probabilities.
The study provides insights into the role of cluster density profiles in lensing statistics.
Abstract
Using the Eikonal approximation we study the effect of the smoothness parameter in the Dyer-Roeder equation. We calculate the optical depth for dark halos with NFW profile, for the abundance the Press-Schechter formalism is used. We focus our analysis on the cross section for multiple images (three). Different cosmologies are compared.
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Taxonomy
TopicsAstronomy and Astrophysical Research · Adaptive optics and wavefront sensing · Galaxies: Formation, Evolution, Phenomena