Journal article
A measurement of the correlation of galaxy surveys with CMB lensing convergence maps from the south pole telescope
LE Bleem, A Van Engelen, GP Holder, KA Aird, R Armstrong, MLN Ashby, MR Becker, BA Benson, T Biesiadzinski, M Brodwin, MT Busha, JE Carlstrom, CL Chang, HM Cho, TM Crawford, AT Crites, T De Haan, S Desai, MA Dobbs, O Doré Show all
Astrophysical Journal Letters | Published : 2012
Abstract
We compare cosmic microwave background lensing convergence maps derived from South Pole Telescope (SPT) data with galaxy survey data from the Blanco Cosmology Survey, WISE, and a new large Spitzer/IRAC field designed to overlap with the SPT survey. Using optical and infrared catalogs covering between 17 and 68deg2 of sky, we detect a correlation between the SPT convergence maps and each of the galaxy density maps at >4σ, with zero correlation robustly ruled out in all cases. The amplitude and shape of the cross-power spectra are in good agreement with theoretical expectations and the measured galaxy bias is consistent with previous work. The detections reported here utilize a small fraction ..
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Awarded by National Science Foundation
Funding Acknowledgements
The SPT is supported by grants ANT-0638937 and ANT-0130612, with partial support provided by PHY-0114422, the Kavli Foundation, and the Moore Foundation. Work at McGill is supported by NSERC, the CRC program, and CIfAR, and at Harvard by grant AST-1009012. R. Keisler acknowledges NASA Hubble Fellowship grant HF-51275.01, B. A. Benson a KICP Fellowship, M. Dobbs an Alfred P. Sloan Research Fellowship, L. Shaw grant AST-1009811, R. Wechsler DOE contract DE-AC02-76SF00515, A. Vallinotto DOE contract DE-AC52-06NA25396 (LA-UR-12-20137), and O. Zahn a BCCP fellowship. This publication uses data from the Wide-field Infrared Survey Explorer, a joint project of UCLA, and JPL/Caltech, funded by NASA, and uses data provided by NOAO PI: 2005B-0043, distributed by the NOAO Science Archive. NOAO is operated by AURA under cooperative agreement with the NSF. This work is based in part on observations made with the Spitzer Space Telescope, operated by JPL, Caltech, under a contract with NASA.