A Measurement of the CMB {\ltEE\gt Spectrum from the 2003 Flight of BOOMERANG}
We report measurements of the CMB polarization power spectra from the 2003 January Antarctic flight of BOOMERANG. The primary results come from 6 days of observation of a patch covering 0.22\% of the sky centered near R.A.=82.5d, decl.=-45$^{deg$. The observations were made using four pairs of polar...
Published in: | The Astrophysical Journal |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2006
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Subjects: | |
Online Access: | http://hdl.handle.net/2108/15858 https://doi.org/10.1086/505560 |
Summary: | We report measurements of the CMB polarization power spectra from the 2003 January Antarctic flight of BOOMERANG. The primary results come from 6 days of observation of a patch covering 0.22\% of the sky centered near R.A.=82.5d, decl.=-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 nonzero \ltEE\gt signal in the range 201\ltl\lt1000 with a significance of 4.8 $\sigma$, a 2 $\sigma$ upper limit of 8.6 $\mu$K$^2$ for any \ltBB\gt contribution, and a 2 $\sigma$ upper limit of 7.0 $\mu$K$^2$ for the \ltEB\gt spectrum. Estimates of foreground intensity fluctuations and the nondetection of \ltBB\gt and \ltEB\gt 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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