A Measurement of the Polarization-Temperature Angular Cross-Power Spectrum of the Cosmic Microwave Background from the 2003 Flight of BOOMERANG

doi:10.1086/505557

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F. Piacentini et al. 2006 ApJ 647 833 doi:10.1086/505557

A Measurement of the Polarization-Temperature Angular Cross-Power Spectrum of the Cosmic Microwave Background from the 2003 Flight of BOOMERANG

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F. Piacentini¹, P. A. R. Ade², J. J. Bock^3,4, J. R. Bond⁵, J. Borrill^6,7, A. Boscaleri⁸, P. Cabella⁹, C. R. Contaldi^5,10, B. P. Crill¹¹, P. de Bernardis¹, G. De Gasperis⁹, A. de Oliveira-Costa¹², G. De Troia¹, G. di Stefano¹³, E. Hivon¹¹, A. H. Jaffe¹⁰, T. S. Kisner^14,15, W. C. Jones⁴, A. E. Lange⁴, S. Masi¹, P. D. Mauskopf², C. J. MacTavish¹⁶, A. Melchiorri^1,17, T. E. Montroy¹⁴, P. Natoli^9,18, C. B. Netterfield¹⁶, E. Pascale¹⁶, D. Pogosyan¹⁹, G. Polenta¹, S. Prunet²⁰, S. Ricciardi¹, G. Romeo¹³, J. E. Ruhl¹⁴, P. Santini¹, M. Tegmark¹², M. Veneziani¹ and N. Vittorio^9,18

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¹ Dipartimento di Fisica, Università di Roma La Sapienza, Piazzale Aldo Moro 2, 00185 Rome, Italy
² Department of Physics and Astronomy, Cardiff University, Cardiff CF24 3YB, Wales, 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, London 5W7 2BW, UK
¹¹ IPAC, California Institute of Technology, Pasadena, CA 91125
¹² Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139
¹³ Istituto Nazionale di Geofisica e Vulcanologia, 00143 Rome, Italy
¹⁴ Physics Department, Case Western Reserve University, Cleveland, OH 44106
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 Physics, University of Alberta, Edmonton, AB T6G 2J1, Canada
²⁰ Institut d'Astrophysique, 75104 Paris, France

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Abstract References Cited By

We present a measurement of the polarization-temperature angular cross power spectra, lang TE rang and lang TB rang , of the cosmic microwave background. The result is based on ~200 hr of data from eight polarization-sensitive bolometers operating at 145 GHz during the 2003 flight of BOOMERANG. We detect a significant lang TE rang correlation in the l-range between 50 and 950 with a statistical significance of >3.5 σ. Contamination by polarized foreground emission and systematic effects are negligible in comparison with statistical uncertainties. The spectrum is consistent with previous detections and with the "concordance model" that assumes adiabatic initial conditions. This is the first measurement of polarization-temperature angular cross-power spectra using bolometric detectors.

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