COLLOQUIUM: Probing the History and Dynamics of the Universe with Polarized Signatures in the Cosmic Microwave Background
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).
The Princeton Plasma Physics Laboratory 2017-2018 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 609-243-2484
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