Physics Department Colloquia

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Exploring cosmology with the South Pole Telescope
Date: Friday, March 25th
Time: 3:30 pm
Place: 2103 Chamberlin Hall
Speaker: Amy Bender, Argonne National Laboratory
Abstract: Observations of the cosmic microwave background (CMB) probe a diverse set of fundamental physics in both the early and late universe. CMB measurements are a cornerstone of our now exceptionally precise Lambda-CDM model of cosmology, however, many questions remain. Did an inflationary epoch occur a fraction of a second after the Big Bang? What is the nature of dark energy? Is the Hubble constant controversy new physics or simply measurement systematics? I will describe the SPT-3G receiver that is currently installed on the South Pole Telescope and how it is measuring the CMB to answer these questions. Now starting the fourth year of survey observations, SPT-3G data is already providing tantalizing hints about what scientific goalposts will be possible in the very near future. I'll highlight a few of these results as well as providing perspectives on the upcoming CMB-S4 experiment.
Host: Albrecht Karle
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