20-27 July 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

CMB Power Spectrum Results from the South Pole Telescope

22 Jul 2011, 14:30
35m
Berlioz (Alpes Congrès - Alpexpo)

Berlioz

Alpes Congrès - Alpexpo

Parallel session talk Cosmology and Gravity

Speaker

Dr Christian Reichardt (Dept. of Physics, University of California, Berkeley)

Description

The South Pole Telescope (SPT) is a 10-meter telescope designed to survey the millimeter-wave sky. The telescope and its 960-element bolometric camera were successfully installed at the South Pole in 2007. Since then, the SPT has imaged 2200 square degrees of the sky with low noise and arcminute resolution. I will report on the CMB power spectrum results from SPT. In conjunction with data from the WMAP satellite, the new SPT data leads to a 6 sigma detection of gravitational lensing in the CMB. The SPT+WMAP data also improve constraints on the shape of the primordial power spectrum with implications for inflationary models. Finally, the SPT+WMAP data yield measurements of the primordial helium abundance and the number of relativistic particle species in the early Universe.

Primary author

Dr Christian Reichardt (Dept. of Physics, University of California, Berkeley)

Presentation Materials