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OATS-DAUT SEMINAR
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Speaker: Alex Saro (Ludwig-Maximilians-Universität, Munich, Germany)
Title: The SPT cluster survey and its cosmological implications
Date: Wednesday, September 18th, 2013
Time: 11:30
Venue: Villa Bazzoni
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Abstract: The 10-meter South Pole Telescope (SPT) is a millimeter wavelength telescope designed to conduct sensitive measurements of the cosmic
microwave background (CMB) at arc-minute resolution. The SPT has
successfully conducted a 2500 square degree survey to find clusters of
galaxies from their distortion of the CMB, known as the
Sunyaev-Zel'dovich (SZ) effect. The surface brightness of the SZ effect
is redshift independent which allows a SZ survey to provide a nearly
mass limited cluster sample out to the earliest epochs of cluster
formation. The SPT has identified ~700 of cluster candidates. Of these,
~500 have been optically confirmed, with the majority being newly
discovered clusters at z > 0.5. I will summarize the main results from
the SPT cluster survey, including cosmological constraints from their
measurement of the growth of structure.
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Contact: Stefano Borgani (OATS)