The Gravitational Lensing in Redshift-Space Correlation Functions of Galaxies and Quasars
Abstract
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 the three-dimensional correlation function, simultaneously including those three effects. When two objects are separated over several hundred Mpc along a line of sight, the observed correlation function is dominated by the effect of gravitational lensing rather than intrinsic clustering. For a canonical lambda-cold dark matter model, the lensing signals in the galaxy-galaxy and galaxy-quasar correlations are beyond noise levels in large-scale redshift surveys like the Sloan Digital Sky Survey.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2000
- DOI:
- 10.1086/312762
- arXiv:
- arXiv:astro-ph/0004392
- Bibcode:
- 2000ApJ...537L..77M
- Keywords:
-
- Cosmology: Theory;
- Cosmology: Gravitational Lensing;
- Cosmology: Large-Scale Structure of Universe;
- Methods: Statistical;
- Astrophysics
- E-Print:
- 10 pages, 1 figure, submitted to ApJL