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A Measurement of the Correlation of Galaxy Surveys with CMB Lensing Convergence Maps from the South Pole Telescope

Bleem, L. E. and Doré, O. and Lueker, M. and Padin, S. and Vieira, J. D. (2012) A Measurement of the Correlation of Galaxy Surveys with CMB Lensing Convergence Maps from the South Pole Telescope. Astrophysical Journal Letters, 753 (1). Art. No. L9. ISSN 2041-8205.

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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 68 deg^2 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 of the full 2500 deg^2 SPT survey data and serve as both a proof of principle of the technique and an illustration of the potential of this emerging cosmological probe.

Item Type:Article
Related URLs:
URLURL TypeDescription
Bleem, L. E.0000-0001-7665-5079
Doré, O.0000-0002-5009-7563
Additional Information:© 2012 The American Astronomical Society. Received 2012 March 21; accepted 2012 May 29; published 2012 June 13. 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. Facilities: Blanco (MOSAIC), Spitzer (IRAC), SPT, WISE
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASA Hubble FellowshipHF-51275.01
Kavli FoundationUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Department of Energy (DOE)DE-AC02-76SF00515
Department of Energy (DOE)DE-AC52-06NA25396
Department of Energy (DOE)LA-UR-12-20137
Gordon and Betty Moore FoundationUNSPECIFIED
Subject Keywords:cosmic background radiation; galaxies: structure
Issue or Number:1
Record Number:CaltechAUTHORS:20120723-142746389
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Official Citation:A Measurement of the Correlation of Galaxy Surveys with CMB Lensing Convergence Maps from the South Pole Telescope L. E. Bleem et al. 2012 ApJ 753 L9
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32654
Deposited By: Aucoeur Ngo
Deposited On:23 Jul 2012 22:20
Last Modified:09 Mar 2020 13:18

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