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Astrophysics Colloquium

Cosmic Microwave Background Observations with the South Pole Telescope
Presented by Bradford Benson
Kavli Institute for Cosmological Physics, University of Chicago

Thursday, September 12, 2019
11:00 A.M. in 169-336

Abstract
I will give an overview of the South Pole Telescope (SPT), a 10-meter diameter telescope at the South Pole designed to measure the cosmic microwave background (CMB). The SPT recently completed its twelfth year of observations, over which time it has been equipped with three different cameras (SPT-SZ, SPTpol, and SPT-3G) of increasing sensitivity. I will give an overview of recent SPT results on clusters of galaxies, cross-correlations with the optical Dark Energy Survey (DES), and CMB temperature and polarization anisotropy measurements. I will also discuss the performance and preview results from the SPT-3G 1500 sq. deg. survey, which has completed two of six years of observations. The SPT-3G measurements will be over an order of magnitude deeper than the Planck satellite, and in combination with the overlapping BICEP-array survey, will lead to significantly improved constraints on inflation, play a key role in sharpening current tensions among cosmological data sets, and put improved constraints on extensions to the standard cosmological model.

JPL Contact: Graca Rocha (3-0095)


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