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Small Angular Scale Measurements of the Cosmic Microwave Background Temperature Power Spectrum From QUaD

Friedman, R.B. and Ade, P. and Bock, J. and Bowden, M. and Brown, M.L. and Cahill, G. and Castro, P.G. and Church, S. and Culverhouse, T. and Ganga, K. and Gear, W.K. and Gupta, S. and Hinderks, J. and Kovac, J. and Lange, A.E. and Leitch, E. and Melhuish, S.J. and Memari, Y. and Murphy, J.A. and Orlando, A. and O'Sullivan, C. and Piccirillo, L. and Pryke, C. and Rajguru, N. and Rusholme, B. and Schwarz, R. and Taylor, A.N. and Thompson, K.L. and Turner, A.H. and Wu, E.Y.S. and Zemcov, M. (2009) Small Angular Scale Measurements of the Cosmic Microwave Background Temperature Power Spectrum From QUaD. Astrophysical Journal, 700 (2). L187-L191. ISSN 0004-637X

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Abstract

We present measurements of the cosmic microwave background (CMB) radiation temperature anisotropy in the multipole range 2000 < < 3000 from the QUaD telescope’s second and third observing seasons. After masking the brightest point sources our results are consistent with the primary ΛCDM expectation alone. We estimate the contribution of residual (un-masked) radio point sources using a model calibrated to our own bright source observations, and a full simulation of the source finding and masking procedure. Including this contribution slightly improves the χ2. We also fit a standard Sunyaev–Zel’dovich (SZ) template to the bandpowers and see no strong evidence of an SZ contribution, which is as expected for σ8 ≈ 0.8.

Item Type: Article
Keywords: cosmic microwave background – cosmology; observations;
Subjects: Science & Engineering > Experimental Physics
Item ID: 2099
Depositing User: Dr. Anthony Murphy
Date Deposited: 24 Aug 2010 15:45
Journal or Publication Title: Astrophysical Journal
Publisher: American Astronomical Society
Refereed: Yes
URI:

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