Northwestern Events Calendar

May
29
2015

Bharat Ratra: Dark Energy: Constant or Time Variable?

When: Friday, May 29, 2015
4:00 PM - 5:00 PM CT

Where: Technological Institute, L211, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public

Contact: Pamela Villalovoz   13645

Group: Physics and Astronomy Colloquia

Category: Academic

Description:

Title: Dark Energy: Constant or Time Variable?

Speaker: Bharat Ratra, Kansas State University


Abstract: Experiments and observations over the last decade and a half have persuaded cosmologists that (as yet undetected) dark energy is by far the main component in the energy budget of the 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.

Host: Fred Rasio

Speaker Schedule

 

Keywords: Physics, Astronomy, colloquium

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