First season QUaD CMB temperature and polarization power spectra

QUaD Collaboration: P. Ade (1); J. Bock (2; 3); M. Bowden (1 and; 4); M. L. Brown (5; 6); G. Cahill (7); J. E. Carlstrom (8); P. G. Castro; (5; 9); S. Church (4); T. Culverhouse (8); R. Friedman (8); K. Ganga (10),; W. K. Gear (1); J. Hinderks (4; 11); J. Kovac (3); A. E. Lange (3); E.; Leitch (2; 3); S. J. Melhuish (1; 12); J. A. Murphy (7); A. Orlando; (1); R. Schwarz (8); C. O'Sullivan (7); L. Piccirillo (1; 12); C. Pryke; (8); N. Rajguru (1; 13); B. Rusholme (4; 14); A. N. Taylor (5); K. L.; Thompson (4); E. Y. S. Wu (4); M. Zemcov (1; 2) ((1) Cardiff University,; (2) JPL; (3) Caltech; (4) Stanford University; (5) University of Edinburgh,; (6) University of Cambridge; (7) National University of Ireland Maynooth; (8); University of Chicago; (9) Universidade T\'ecnica de Lisboa; (10) Laboratoire; APC/CNRS; (11) NASA Goddard; (12) University of Manchester; (13) UCL; (14); IPAC)

arXiv:0705.2359·astro-ph·November 13, 2009

First season QUaD CMB temperature and polarization power spectra

QUaD Collaboration: P. Ade (1), J. Bock (2, 3), M. Bowden (1 and, 4), M. L. Brown (5, 6), G. Cahill (7), J. E. Carlstrom (8), P. G. Castro, (5, 9), S. Church (4), T. Culverhouse (8), R. Friedman (8), K. Ganga (10),, W. K. Gear (1), J. Hinderks (4, 11), J. Kovac (3)

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TL;DR

This paper presents initial measurements of the cosmic microwave background temperature and polarization power spectra from the QUaD experiment, confirming consistency with the standard cosmological model and demonstrating minimal systematic contamination.

Contribution

First season QUaD data provides early CMB power spectra measurements, validating instrument performance and foreground contamination checks.

Findings

01

Spectra are consistent with LCDM model.

02

No significant foreground contamination detected.

03

Instrumental systematics are negligible.

Abstract

QUaD is a bolometric CMB polarimeter sited at the South Pole, operating at frequencies of 100 and 150 GHz. In this paper we report preliminary results from the first season of operation (austral winter 2005). All six CMB power spectra are presented derived as cross spectra between the 100 and 150 GHz maps using 67 days of observation in a low foreground region of approximately 60 square degrees. This data is a small fraction of the data acquired to date. The measured spectra are consistent with the LCDM cosmological model. We perform jackknife tests which indicate that the observed signal has negligible contamination from instrumental systematics. In addition by using a frequency jackknife we find no evidence for foreground contamination.

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