AAS 204th Meeting, June 2004
Session 91 Young Galaxies and Evolution in the Early Universe
Oral, Thursday, June 3, 2004, 2:00-3:30pm, 603/605/607

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[91.07] Cosmic Background Imager Observations of the Temperature and Polarization of the CMB

S. T. Myers (NRAO), CBI Collaboration

The Cosmic Background Imager (CBI) is an interferometer dedicated to observations of the Cosmic Microwave Background (CMB). The CBI has 13 90-cm antennas mounted on a 5.5-m platform and observes in the band 26-36 GHz from the Chilean Andes near San Pedro de Atacama (alt. 5000m). The CBI has been in operation since 1999, and has produced measurements of the CMB temperature angular power spectrum as reported in previous publications, as well as observations of the Sunyaev-Zeldovich Effect in nearby clusters of galaxies. Since September 2002, the CBI has been operating in a configuration optimized for CMB polarization observations. We present the most recent CBI results on the temperature and polarization angular power spectra, and discuss the implications for the determination of cosmological parameters and the discrimination between cosmological models. Comparison and combination with other CMB observations is also presented. The CBI is funded by the National Science Foundation, along with the generous support of the CBI team home institutions.

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