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Realistic Galaxy Models for Lensing Statistics

Published online by Cambridge University Press:  26 May 2016

David. Rusin  and
Max. Tegmark
David. Rusin
Affiliation:
Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104-6396, USA
Max. Tegmark
Affiliation:
Department of Physics & Astronomy, University of Pennsylvania, Philadelphia, PA 19104-6396, USA

Abstract

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The gravitational lensing rate in a well-defined sample of sources can place strong bounds on the cosmological constant, but only if the lensing optical depth is robustly calculated. Significant progress is likely to be achieved by employing more realistic models to describe the population of lens galaxies. Here we investigate the role of elliptical deflectors in lensing statistics, and their effect on cosmological constraints derived from the JVAS survey. We also evaluate the prospects for constraining the cosmological constant using the much larger CLASS data set.

Type
Part VIII: Dark Matter and Ω0
Information
Symposium - International Astronomical Union , Volume 201: New Cosmological Data and the Values of the Fundamental Parameters , 2005 , pp. 292 - 295
Copyright
Copyright © Astronomical Society of the Pacific 2005 

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