The Gravitational Lensing in Redshift-space Correlation Functions of Galaxies and Quasars
Astrophysics
2009-10-31 v1
Abstract
The gravitational lensing, as well as the velocity field and the cosmological light-cone warp, changes the observed correlation function of high-redshift objects. We present an analytical expression of 3D correlation function, simultaneously including those three effects. When two objects are separated over several hundreds Mpc along a line of sight, the observed correlation function is dominated by the effect of gravitational lensing rather than the intrinsic clustering. For a canonical lambda-CDM model, the lensing signals in the galaxy-galaxy and galaxy-QSO correlations are beyond noise levels in large-scale redshift surveys like the Sloan Digital Sky Survey.
Cite
@article{arxiv.astro-ph/0004392,
title = {The Gravitational Lensing in Redshift-space Correlation Functions of Galaxies and Quasars},
author = {Takahiko Matsubara},
journal= {arXiv preprint arXiv:astro-ph/0004392},
year = {2009}
}
Comments
10 pages, 1 figure, submitted to ApJL