Abstract
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°.5, decl. = -45°. 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 〈EE〉 signal in the range 201 < l < 1000 with a significance of 4.8 σ, a 2 σ upper limit of 8.6 μK2 for any 〈BB〉 contribution, and a 2 σ upper limit of 7.0 μK2 for the 〈EB〉 spectrum. Estimates of foreground intensity fluctuations and the non-detection of 〈BB〉 and 〈EB〉 signals rule out any significant contribution from Galactic foregrounds. The results are consistent with a ΛCDM cosmology seeded by adiabatic perturbations. We note that this is the first detection of CMB polarization with bolometric detectors.
Original language | English (US) |
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Pages (from-to) | 813-822 |
Number of pages | 10 |
Journal | Astrophysical Journal |
Volume | 647 |
Issue number | 2 I |
DOIs | |
State | Published - Aug 20 2006 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Cosmic microwave background
- Instrumentation: detectors