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News Archive

Archive – January 2012

Blake Sherwin, a physics graduate student working with David Spergel, and Sudeep Das, a recent Princeton astrophysics PhD have led the first CMB-only detection of gravitational lensing of the CMB using data from the Atacama Cosmology Telescope (ACT).  Using this detection and data from the Wilkinson Microwave Anisotropy Probe, they have shown that this detection implies that the universe is filled with dark energy. Physics Today cited this work as one of the top physics results of 2011 Hi