Journal article

MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND DAMPING TAIL FROM THE 2500-SQUARE-DEGREE SPT-SZ SURVEY

KT Story, CL Reichardt, Z Hou, R Keisler, KA Aird, BA Benson, LE Bleem, JE Carlstrom, CL Chang, H-M Cho, TM Crawford, AT Crites, T de Haan, MA Dobbs, J Dudley, B Follin, EM George, NW Halverson, GP Holder, WL Holzapfel Show all

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2013

Abstract

We present a measurement of the cosmic microwave background (CMB) temperature power spectrum using data from the recently completed South Pole Telescope Sunyaev-Zel'dovich (SPT-SZ) survey. This measurement is made from observations of 2540 deg2 of sky with arcminute resolution at 150 GHz, and improves upon previous measurements using the SPT by tripling the sky area. We report CMB temperature anisotropy power over the multipole range 650 < ℓ < 3000. We fit the SPT bandpowers, combined with the 7 yr Wilkinson Microwave Anisotropy Probe (WMAP7) data, with a six-parameter ΛCDM cosmological model and find that the two datasets are consistent and well fit by the model. Adding SPT measurements sig..

View full abstract

University of Melbourne Researchers

Grants

Awarded by National Science Foundation


Awarded by NSF


Awarded by NASA Hubble Fellowship


Awarded by Office of Science of the U.S. Department of Energy


Awarded by Open Science Grid, NSF



Awarded by Directorate For Geosciences


Funding Acknowledgements

We thank Scott Dodelson, John Peacock, David Baumann, and Antonio Riotto for useful conversations. The SPT is supported by the National Science Foundation through grant ANT-0638937, with partial support provided by NSF grant PHY-1125897, the Kavli Foundation, and the Gordon and Betty Moore Foundation. The McGill group acknowledges funding from the National Sciences and Engineering Research Council of Canada, Canada Research Chairs program, and the Canadian Institute for Advanced Research. Work at Harvard is supported by grant AST-1009012. R. Keisler acknowledges support from NASA Hubble Fellowship grant HF-51275.01, B. A. Benson a KICP Fellowship, M. Dobbs an Alfred P. Sloan Research Fellowship, O. Zahn a BCCP fellowship, M. Millea and L. Knox a NSF grant 0709498. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under contract No. DE-AC02-05CH11231, and the resources of the University of Chicago Computing Cooperative (UC3), supported in part by the Open Science Grid, NSF grant NSF PHY 1148698. Some of the results in this paper have been derived using the HEALPix (Gorski et al. 2005) package. We acknowledge the use of the Legacy Archive for Microwave Background Data Analysis (LAMBDA). Support for LAMBDA is provided by the NASA Office of Space Science.