3:30–5:00 pm ERC 161
Title: The Revolution Starts Now: A New Era for Measurements of the Cosmic Microwave Background
Abstract: Measurements of the cosmic microwave background are an important cornerstone to our understanding of the Universe, with measurements in the next few years poised to make substantial improvements to current cosmological constraints. The South Pole Telescope (SPT) is at the forefront of these advances with measurements from the currently installed SPT-3G camera, which has been used to survey 10,000 square degrees of sky with an unprecedented combination of depth and angular resolution at 95, 150, and 220 GHz. Early results from SPT-3G have demonstrated how ground-based CMB measurements have begun to drive our current cosmological constraints, and sharpen our understanding of cosmological tensions, with results in the next year poised to reduce the allowed LCDM likelihood space by a factor of ~100. The early SPT-3G results have also demonstrated how CMB surveys will find a factor of ~20 more clusters than previous generation surveys, enabling new probes of cosmology in combination with optical surveys. Finally, I will describe plans to increase the CMB sensitivity of SPT by nearly an order of magnitude with the new SPT-3G+ camera, planned to deploy at the end of 2028. The SPT-3G and SPT-3G+ data, in combination with lower-resolution measurements from the BICEP Array, will improve constraints on Inflation by nearly an order of magnitude, near the lower-limit predicted from single-field, slow-roll Inflationary models.
Zoom: https://uchicago.zoom.us/j/95163709101?pwd=n2tRNMeI5Cda1rL9rVCXL7eApjQJSl.1
