Probing Dark Energy with Lensing Magnification in Photometric Surveys
Cosmology and Nongalactic Astrophysics
2015-06-18 v1
Abstract
I present an estimator for the angular cross-correlation of two tracers of the cosmological large-scale structure that utilizes redshift information to isolate separate physical contributions. The estimator is derived by solving the Limber equation for a re-weighting of the foreground tracer that nulls either clustering or lensing contributions to the cross-correlation function. Applied to future photometric surveys, the estimator can enhance the measurement of gravitational lensing magnification effects to provide a competitive independent constraint on the dark energy equation of state.
Keywords
Cite
@article{arxiv.1401.0537,
title = {Probing Dark Energy with Lensing Magnification in Photometric Surveys},
author = {Michael D. Schneider},
journal= {arXiv preprint arXiv:1401.0537},
year = {2015}
}
Comments
5 pages, 3 figures, accepted for publication in PRL