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SUMMARY:The First Detection of the CMB Lensing Power Spectrum with ACT and
  its implications for Cosmology - Blake D Sherwin (Department of Physics\,
  Princeton University)
DTSTART:20110621T153000Z
DTEND:20110621T163000Z
UID:TALK31630@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:I will discuss the first detection of the power spectrum of CM
 B lensing in temperature maps made by the Atacama Cosmology Telescope.  Th
 e CMB lensing power spectrum is a direct gravitational probe of dark matte
 r and geometry at redshift ~2.  I will demonstrate the power of such CMB l
 ensing measurements by explaining how with our measurements\, CMB data alo
 ne require the presence of dark energy at above 3-sigma.
LOCATION:Ryle Seminar Room\, Cavendish Laboratory
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