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slides - Physics and Astronomy - University of Mississippi

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Wilkinson Microwave Anisotropy Probe<br />

Eisenstein <strong>and</strong> Bennett, <strong>Physics</strong> Today, April 2008<br />

Pressure map <strong>of</strong> sound<br />

field at Recombination<br />

Average microwave<br />

background: T~2.725K<br />

with small variations.<br />

Power spectrum versus<br />

angular size in the sky<br />

shows harmonic peaks.<br />

First peak (480 Mly -<br />

acoustic scale)<br />

corresponds to distance<br />

a sound wave traveled<br />

during inflation.<br />

Predicted by Andrei<br />

The <strong>University</strong> <strong>of</strong><br />

<strong>Mississippi</strong><br />

Sakharov (1965)<br />

Institute for Advanced<br />

Education in Geospatial<br />

Science<br />

J.R. Gladden<br />

THE UNIVERSITY OF MISSISSIPPI

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