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DTSTART;TZID=America/Chicago:20261013T110000
DTEND;TZID=America/Chicago:20261013T120000
DTSTAMP:20260914T184858Z
SUMMARY:CIERA Colloquium: Bharat Ratra "Dark Energy Dynamics\, Spatial Curvature\, Neither\, or Both?"
UID:646145@northwestern.edu
TZID:America/Chicago
DESCRIPTION:Observations over the last two and half decades have persuaded cosmologists that (as yet only indirectly detected) dark energy is by far the main component of the energy budget of the current universe. I review a few simple dark energy models\, including the currently-standard ΛCDM cosmological model\, and compare their predictions to observational data\, to derive cosmological parameter constraints and to study consistency of different data sets. I summarize observational constraints on dark energy dynamics and spatial curvature\, two parameters that extend away from the time-independent cosmological constant dark energy and flat spatial hypersurfaces of the standard ΛCDM model. I also summarize observational constraints on the Hubble constant. I conclude with a list of my favorite open cosmological questions.  Speaker: Bharat Ratra\, Kansas State University  Host: Claude-André Faucher-Giguère\n\nMore Info: https://ciera.northwestern.edu/programs/ciera-colloquia/
LOCATION:1800 Sherman Avenue\, 7th floor\, 7-600\, Evanston\, IL 60201
TRANSP:OPAQUE
URL:https://ciera.northwestern.edu/programs/ciera-colloquia/
CREATED:20260914T050000Z
STATUS:CONFIRMED
LAST-MODIFIED:20260914T163421Z
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