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Cosmology from the Cosmic Microwave Background

Event Details

Event Dates: 

Monday, April 2, 2012 - 10:00am

Speaker Name(s): 

Joanna Dunkley

Speaker Affiliation(s): 

University of Oxford
Seminar Type/Subject

Event Details & Abstract: 

I will describe the status of current Cosmic Microwave Background observations, from WMAP to new ground-based observations, and in anticipation of results from the Planck satellite. In particular I will describe recent results from the Atacama Cosmology Telescope, which has mapped the microwave sky to arcminute scales. I will present results from ACT, as well as the South Pole Telescope, on the angular power spectrum of the CMB fluctuations, measuring primordial acoustic oscillations well into the Silk damping tail, and shedding light on the early universe. I will also describe the extraction of a gravitational lensing signal from these observations, and its implications for constraining dark energy. I will conclude with some prospects for Planck, and upcoming ground-based experiments.