A Measurement of the CMB <EE> Spectrum from the 2003 Flight of BOOMERANG

Details A Measurement of the CMB <EE> Spectrum from the 2003 Flight of BOOMERANG A Measurement of the CMB <EE> Spectrum from the 2003 Flight of BOOMERANG

2005-07-21

arxiv.org/abs/astro-ph/0507514v1

Astrophys.J.647:813-822,2006

Astronomy and Astrophysics

Astrophysics

Submitted to Astrophysical Journal

Scientific paper

10.1086/505560

We report measurements of the CMB polarization power spectra from the January 2003 Antarctic flight of BOOMERANG. The primary results come from six days of observation of a patch covering 0.22% of the sky centered near R.A. = 82.5 deg., Dec= -45 deg. The observations were made using four pairs of polarization sensitive bolometers operating in bands centered at 145 GHz. Using two independent analysis pipelines, we measure a non-zero signal in the range 100< l <1000 with a significance 4.8-sigma, a 2-sigma upper limit of 8.6 uK^2 for any contribution, and a 2-sigma upper limit of 7.0 uK^2 for the spectrum. Estimates of foreground intensity fluctuations and the non-detection of and signals rule out any significant contribution from galactic foregrounds. The results are consistent with a Lambda-CDM cosmology seeded by adiabatic perturbations. We note that this is the first detection of CMB polarization with bolometric detectors.

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