Calendar

Apr
2
Mon
Pizza Lunch: Michael Engelhardt (Physics), “The quarks in the proton go round and round …”
Apr 2 @ 12:30 pm – 1:30 pm
Pizza Lunch: Michael Engelhardt (Physics), "The quarks in the proton go round and round ..." @ AY 119

The quarks in the proton go round and round …

Sep
28
Fri
Colloquium: Bharat Ratra (Host: Anatoly Klypin)
Sep 28 @ 3:15 pm – 4:15 pm
Colloquium: Bharat Ratra (Host: Anatoly Klypin) @ BX102

Spatial Curvature, Dark Energy Dynamics, Neither, or Both?

Bharat Ratra, Kansas State University

Experiments and observations over the two last decades have persuaded cosmologists that (as yet undetected) dark energy is by far the main component of the energy budget of the current universe. I review a few simple dark energy models and compare their predictions to observational data, to derive dark energy model-parameter constraints and to test consistency of different data sets. I conclude with a list of open cosmological questions.