First Season QUaD CMB Temperature and Polarization Power Spectra

• Main Authors: Ade, P.A.R., Bock, J., Bowden, M., Brown, M.L., Cahill, G., Carlstrom, J.E., Castro, P.G., Church, S., Culverhouse, T., Friedman, R., Ganga, K., Gear, W.K., Hinderks, J., Kovac, J., Lange, A.E., Leitch, E., Melhuish, S.J., Murphy, J.Anthony, Orlando, A., Schwarz, R., O'Sullivan, Créidhe, Piccirillo, L., Prycke, C., Rajguru, N., Rusholme, B., Taylor, A.N., Thompson, K.L., Wu, E.Y.S., Zemcov, M.
• Format: Article in Journal/Newspaper
• Language: English
• Published: American Astronomical Society 2008
• Subjects: Experimental Physics; Austral; South Pole; South pole
• Online Access: https://mural.maynoothuniversity.ie/3503/; https://mural.maynoothuniversity.ie/3503/1/PA_First_Season_QUaD.pdf

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 fromthe 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 deg2. These data are a small fraction of the data acquired to date. The measured spectra are consistent with the ΛCDM cosmological model.We perform jackknife tests that 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.