"Planck and Beyond"

Mon, 10/21/2013 - 2:10pm
831 Pupin Hall

On Monday, October 21, 2013, David Spergel of Princeton will give his talk:

"Planck and Beyond"


The Planck satellite has made an accurate full-sky measurement of the microwave background  temperature fluctuations.  These measurements probe both the physics of the very early universe and the basic properties of the universe today.  The Planck  measurements confirm the earlier WMAP and ground-based results, rigorously test our standard cosmological model and provide an accurate determination of basic comological parameters (the curvature of the universe, its matter density and composition).  I will highlight some intriguing discrepancies in the Planck data and possible resolutions.

Many key cosmological questions remain unanswered: what happened during the first moments of the big bang?  What is the dark energy?  What were the properties of the first stars?  I will discuss the role of on-going and future CMB observations in addressing these key cosmological questions and conclude by describing recent progress in developing the WFIRST mission to address cosmological questions.