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Title: The Cosmic Microwave Sky: Beyond the Power Spectrum
Originating Office: IAS
Speaker: Shellard, Paul
Issue Date: 1-Jun-2011
Event Date: 1-Jun-2011
Group/Series/Folder: Record Group 8.15 - Institute for Advanced Study
Series 3 - Audio-visual Materials
Location: 8.15:3 box 1.7
Notes: IAS Conference on Cosmology since Einstein.
IAS title: Talk 16: 'The Cosmic Microwave Sky: Beyond the Power Spectrum'.
Abstract: Some of the most stringent tests of the standard inflationary cosmology relate to its statistical properties beyond the power spectrum: primordial fluctuations are predicted to deviate from Gaussianity by less than 1 part in 100,000. New high resolution experiments will place standard inflation firmly in the dock, especially forthcoming data from the Planck satellite survey of the cosmic microwave background (CMB). Prof Shellard describes new modal estimator methods which allow the efficient and optimal extraction of higher order correlators (the bispectrum and trispectrum) from these large datasets. He reviews current polyspectra constraints from the WMAP CMB maps, as well as forecasts for Planck. Finally, he discusses future prospects for uncovering non‐Gaussian signatures of new physics from the early universe.
Duration: 38 min.
Appears in Series:8.15:3 - Audio-visual Materials
Videos for Public -- Distinguished Lectures