Cross-correlating Planck CMB lensing with SDSS: Lensing-lensing and galaxy-lensing cross-correlations
Abstract
We present results from cross-correlating Planck CMB lensing maps with the Sloan Digital Sky Survey (SDSS) galaxy lensing shape catalog and BOSS galaxy catalogs. For galaxy position vs. CMB lensing cross-correlations, we measure the convergence signal around the galaxies in configuration space, using the BOSS LOWZ () and CMASS () samples. With fixed Planck 2015 cosmology, doing a joint fit with the galaxy clustering measurement, for the LOWZ (CMASS) sample we find a galaxy bias () and galaxy-matter cross-correlation coefficient () using Mpc, consistent with results from galaxy-galaxy lensing. Using the same scales and including the galaxy-galaxy lensing measurements, we constrain and relative calibration bias between the CMB lensing and galaxy lensing to be . The combination of galaxy lensing and CMB lensing also allows us to measure the cosmological distance ratios (with , ) , consistent with predictions from the Planck 2015 cosmology (). We detect the galaxy position-CMB convergence cross-correlation at small scales, Mpc, and find consistency with lensing by NFW halos of mass . Finally, we measure the CMB lensing-galaxy shear cross-correlation, finding an amplitude of (, ) with respect to Planck 2015 CDM predictions (-level consistency). We do not find evidence for relative systematics between the CMB and SDSS galaxy lensing.
Keywords
Cite
@article{arxiv.1606.08841,
title = {Cross-correlating Planck CMB lensing with SDSS: Lensing-lensing and galaxy-lensing cross-correlations},
author = {Sukhdeep Singh and Rachel Mandelbaum and Joel R. Brownstein},
journal= {arXiv preprint arXiv:1606.08841},
year = {2016}
}
Comments
20 pages. Main results in figure 3 and figures 10-14. Accepted in MNRAS