A Collaborative National Center for Fusion & Plasma Research
Events
 
September 23, 2015,
4:00pm to 5:30pm
Colloquia

MBG Auditorium

COLLOQUIUM: Probing the History and Dynamics of the Universe with Polarized Signatures in the Cosmic Microwave Background

Professor Suzane Staggs
Princeton University
Presentation: 


The cosmic microwave background (CMB) radiation reports the initial conditions in the universe for the formation of large scale structures (galaxies and their dark matter halos, clusters of galaxies). The CMB is slightly polarized by Thomson scattering whenever there is any local quadrupolar anisotropy in the distribution of the scattering electron population. A tantalizing fact is that the gravitational wave background left after a proposed early epoch of exponential expansion of the universe, aka inflation, could produce a unique signature in the polarization, called B-modes. I will elaborate on the present state of CMB polarization measurements at both large and small angles, with a focus on data from two instruments in the Atacama Desert: the Atacama Cosmology Telescope (ACT) and the Atacama B-mode Search (ABS).

Colloquium Committee: 

The Princeton Plasma Physics Laboratory 2016-2017 Colloquium Committee is comprised of the following people. Please feel free to contact them by e-mail regarding any possible speakers or topics for future colloquia.

Carol Ann Austin, caustin@pppl.gov
Soha Aslam, saslam@pppl.gov
Ilya Dodin, idodin@pppl.gov
Dave Johnson, djohnson@pppl.gov

  • Carol Ann Austin 609-243-2484

U.S. Department of Energy
Princeton Plasma Physics Laboratory is a U.S. Department of Energy national laboratory managed by Princeton University.

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