Journal article
A measurement of secondary cosmic microwave background anisotropies with two years of south pole telescope observations
CL Reichardt, L Shaw, O Zahn, KA Aird, BA Benson, LE Bleem, JE Carlstrom, CL Chang, HM Cho, TM Crawford, AT Crites, T De Haan, MA Dobbs, J Dudley, EM George, NW Halverson, GP Holder, WL Holzapfel, S Hoover, Z Hou Show all
Astrophysical Journal | Published : 2012
Abstract
We present the first three-frequency South Pole Telescope (SPT) cosmic microwave background (CMB) power spectra. The band powers presented here cover angular scales 2000 < ℓ < 9400 in frequency bands centered at 95, 150, and 220 GHz. At these frequencies and angular scales, a combination of the primary CMB anisotropy, thermal and kinetic Sunyaev-Zel'dovich (SZ) effects, radio galaxies, and cosmic infrared background (CIB) contributes to the signal. We combine Planck/HFI and SPT data at 220 GHz to constrain the amplitude and shape of the CIB power spectrum and find strong evidence for nonlinear clustering. We explore the SZ results using a variety of cosmological models for the CMB and CIB an..
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Awarded by National Science Foundation
Funding Acknowledgements
We thank Cien Shang, Guilaine Lagache, Olivier Dore, and Marco Viero for useful discussions and assistance with the CIB modeling. The South Pole Telescope is supported by the National Science Foundation through grants ANT-0638937 and ANT-0130612. Partial support is also provided by the NSF Physics Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics at the University of Chicago, 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. R. K. acknowledges support from NASA Hubble Fellowship grant HF-51275.01. B. A. B. is supported by a KICP Fellowship. M. D. acknowledges support from an Alfred P. Sloan Research Fellowship. L. S. acknowledges the support of Yale University and NSF grant AST-1009811. M. M. and L. K. acknowledge the support of 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. 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.