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

doi:10.1086/505560

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T. E. Montroy et al. 2006 ApJ 647 813 doi:10.1086/505560

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

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T. E. Montroy¹, P. A. R. Ade², J. J. Bock^3,4, J. R. Bond⁵, J. Borrill^6,7, A. Boscaleri⁸, P. Cabella⁹, C. R. Contaldi¹⁰, B. P. Crill¹¹, P. de Bernardis¹², G. De Gasperis⁹, A. de Oliveira-Costa¹³, G. De Troia¹², G. di Stefano¹⁴, E. Hivon¹¹, A. H. Jaffe¹⁰, T. S. Kisner^1,15, W. C. Jones⁴, A. E. Lange⁴, S. Masi¹², P. D. Mauskopf², C. J. MacTavish¹⁶, A. Melchiorri^12,17, P. Natoli^9,18, C. B. Netterfield^16,19, E. Pascale¹⁶, F. Piacentini¹², D. Pogosyan²⁰, G. Polenta¹², S. Prunet²¹, S. Ricciardi¹², G. Romeo¹⁴, J. E. Ruhl¹, P. Santini¹², M. Tegmark¹³, M. Veneziani¹² and N. Vittorio^9,18

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¹ Physics Department, Case Western Reserve University, Rockefeller Building, 10900 Euclid Avenue, Cleveland, OH 44106
² School of Physics and Astronomy, Cardiff University, Cardiff CF24 3YB, UK
³ Jet Propulsion Laboratory, Pasadena, CA 91109
⁴ Observational Cosmology, California Institute of Technology, Pasadena, CA 91125
⁵ Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, ON M5S 3H8, Canada
⁶ Computational Research Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
⁷ Space Sciences Laboratory, University of California, Berkeley, CA 94720
⁸ IFAC-CNR, 50127 Florence, Italy
⁹ Dipartimento di Fisica, Università di Roma "Tor Vergata," 00133 Rome, Italy
¹⁰ Theoretical Physics Group, Imperial College SW7 2BW, London, UK
¹¹ IPAC, California Institute of Technology, Pasadena, CA 91125
¹² Dipartimento di Fisica, Università di Roma La Sapienza, 00185 Rome, Italy
¹³ Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139
¹⁴ Istituto Nazionale di Geofisica e Vulcanologia, 00143 Rome, Italy
¹⁵ Department of Physics, University of California, Santa Barbara, CA 93106
¹⁶ Physics Department, University of Toronto, Toronto, ON M5S 3H8, Canada
¹⁷ INFN, Sezione di Roma 1, 00133 Rome, Italy
¹⁸ INFN, Sezione di Roma 2, 00133 Rome, Italy
¹⁹ Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H8, Canada
²⁰ Physics Department, University of Alberta, Edmonton, AB T6G 2J1, Canada
²¹ Institut d'Astrophysique, 75014 Paris, France

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Abstract References Cited By

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 fdg 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 lang EE rang 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 lang BB rang contribution, and a 2 σ upper limit of 7.0 μK² for the lang EB rang spectrum. Estimates of foreground intensity fluctuations and the nondetection of lang BB rang and lang EB rang 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.

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