Cosmology from Cluster SZ and Weak Lensing Data
Astrophysics
2007-05-23 v2
Abstract
Weak gravitational lensing and the Sunyaev-Zel'dovich effect provide complementary information on the composition of clusters of galaxies. Preliminary results from cluster SZ observations with the Very Small Array are presented. A Bayesian approach to combining this data with wide field lensing data is then outlined; this allows the relative probabilities of cluster models of varying complexity to be computed. A simple simulation is used to demonstrate the importance of cluster model selection in cosmological parameter determination.
Keywords
Cite
@article{arxiv.astro-ph/0205345,
title = {Cosmology from Cluster SZ and Weak Lensing Data},
author = {P. J. Marshall and K. Lancaster and M. P. Hobson and K. J. B. Grainge},
journal= {arXiv preprint arXiv:astro-ph/0205345},
year = {2007}
}
Comments
4 pages, 4 figures, to appear in proceedings of XXXVIIth Rencontres de Moriond, "The Cosmological Model"; h-depebndence corrected, typos fixed