A Measurement of the Correlation of Galaxy Surveys with CMB Lensing Convergence Maps from the South Pole Telescope
- Creators
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Bleem, L. E.
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Doré, O.
- Lueker, M.
- Padin, S.
- Vieira, J. D.
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 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.
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, WISEAttached Files
Published - Bleem2012p18938Astrophys_J_Lett.pdf
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Additional details
- Eprint ID
- 32654
- Resolver ID
- CaltechAUTHORS:20120723-142746389
- NASA Hubble Fellowship
- HF-51275.01
- Kavli Foundation
- Alfred P. Sloan Foundation
- NSF
- AST-1009811
- Department of Energy (DOE)
- DE-AC02-76SF00515
- Department of Energy (DOE)
- DE-AC52-06NA25396
- Department of Energy (DOE)
- LA-UR-12-20137
- BCCP Fellowship
- Gordon and Betty Moore Foundation
- Created
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2012-07-23Created from EPrint's datestamp field
- Updated
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2023-03-15Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)