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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:1
UID:UW-Physics-Event-6751
DTSTART:20220325T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T153852Z
LAST-MODIFIED:20220317T190826Z
LOCATION:2103 Chamberlin Hall
SUMMARY:Exploring cosmology with the South Pole Telescope\, Physics De
 partment Colloquium\, Amy Bender\, Argonne National Laboratory
DESCRIPTION:Observations of the cosmic microwave background (CMB) prob
 e a diverse set of fundamental physics in both the early and late univ
 erse.  CMB measurements are a cornerstone of our now exceptionally pre
 cise 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 cont
 roversy new physics or simply measurement systematics?  I will describ
 e the SPT-3G receiver that is currently installed on the South Pole Te
 lescope and how it is measuring the CMB to answer these questions.  No
 w starting the fourth year of survey observations\, SPT-3G data is alr
 eady providing tantalizing hints about what scientific goalposts will 
 be possible in the very near future.  I'll highlight a few of these re
 sults as well as providing perspectives on the upcoming CMB-S4 experim
 ent. 
URL:https://www.physics.wisc.edu/events/?id=6751
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