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Polarization Observations with the Cosmic Background Imager

Readhead, A. C. S. and Myers, S. T. and Pearson, T. J. and Sievers, J. L. and Mason, B. S. and Contaldi, C. R. and Bond, J. R. and Bustos, R. and Altamirano, P. and Achermann, C. and Bronfman, L. and Carlstrom, J. E. and Cartwright, J. K. and Casassus, S. and Dickinson, C. and Holzapfel, W. L. and Kovac, J. M. and Leitch, E. M. and May, J. and Padin, S. and Pogosyan, D. and Pospieszalski, M. and Pryke, C. and Reeves, R. and Shepherd, M. C. and Torres, S. (2004) Polarization Observations with the Cosmic Background Imager. Science, 306 (5697). pp. 836-844. ISSN 0036-8075. doi:10.1126/science.1105598.

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Polarization observations of the cosmic microwave background with the Cosmic Background Imager from September 2002 to May 2004 provide a significant detection of the E-mode polarization and reveal an angular power spectrum of polarized emission showing peaks and valleys that are shifted in phase by half a cycle relative to those of the total intensity spectrum. This key agreement between the phase of the observed polarization spectrum and that predicted on the basis of the total intensity spectrum provides support for the standard model of cosmology, in which dark matter and dark energy are the dominant constituents, the geometry is close to flat, and primordial density fluctuations are predominantly adiabatic with a matter power spectrum commensurate with inflationary cosmological models.

Item Type:Article
Related URLs:
URLURL TypeDescription DOIArticle Information Paper
Readhead, A. C. S.0000-0001-9152-961X
Pearson, T. J.0000-0001-5213-6231
Bond, J. R.0000-0003-2358-9949
Carlstrom, J. E.0000-0002-2044-7665
Dickinson, C.0000-0002-0045-442X
Reeves, R.0000-0001-5704-271X
Additional Information:© 2004 American Association for the Advancement of Science. 23 September 2004; Accepted 4 October 2004; Published online 7 October 2004. We gratefully acknowledge the generous support of the Kavli Operating Institute, which made the polarization upgrade possible, and thank B. and S. Rawn, Jr., for their continuing support. We are also grateful for the support of M. and R. Linde, C. and S. Drinkward, and the provost, president, and PMA division chairman of the California Institute of Technology. This work was supported by the NSF under grants AST 9413935, 9802989, 0098734, and 0206416. The computing facilities at CITA were funded by the Canada Foundation for Innovation. J.R.B., C.R.C., J.L.S., and D.P. acknowledge support from the Canadian Institute for Advanced Research and Natural Science and Engineering Research Council at CITA. S.C. acknowledges support by Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT) grant 1030805. RB was supported partially by Comisión Nacional de Investigación Científica y Tecnológica (CONICYT). L.B., S.C., and J.M. acknowledge support from the Chilean Center for Astrophysics Programa Fondo de Investigación Avanzada en Areas (FONDAP) No. 15010003. S.T. acknowledges support by grant Milenio ICM P02-049. J.E.C., J.K.C., E.M.L., and C.P. acknowledge support from NSF grant OPP-0094541 to the Kavli Institute for Cosmological Physics, an NSF Physics Frontier Center. We thank CONICYT for granting permission to operate within the Chanjnantor Scientific Preserve in Chile, and the National Radio Astronomy Observatory (NRAO) Central Development Lab for developing the High Electron Mobility Transistor amplifiers used in this project and assisting with production. We thank N. Oyarce, W. Araya, and J. Cortes for their dedicated work in operating the CBI.
Funding AgencyGrant Number
Kavli Operating InstituteUNSPECIFIED
NSFAST 9413935
Canada Foundation for InnovationUNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1030805
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)UNSPECIFIED
Fondo de Financiamiento de Centros de Investigación en Áreas Prioritarias (FONDAP)15010003
Issue or Number:5697
Record Number:CaltechAUTHORS:20141202-152432483
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52294
Deposited On:03 Dec 2014 20:40
Last Modified:19 Jan 2023 00:37

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