Northwestern University

Jan
26
Fri 4:00 PM

Mark Wise: Primordial Non-Gaussianities and the Distribution of Galaxies on Large Scales

When: Friday, January 26, 2018
4:00 PM - 5:00 PM  

Where: Technological Institute, L211, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Public - Post Docs/Docs - Graduate Students

Contact: Yassaman   847.491.7650

Group: Physics and Astronomy Colloquia

Category: Academic

Description:

Title: Primordial Non-Gaussianities and the Distribution of Galaxies on Large Scales

Speaker: Mark Wise, Caltech

Abstract: The inflationary cosmology predicts a primordial two point spatial correlation of the dark matter mass density that is almost scale invariant. This is in agreement with measurements of the microwave background anisotropy. The fluctuations in the dark matter mass density generated during the inflationary era may not be Gaussian. I discuss how such primordial non-Gaussianities can dramatically alter our expectations for the spatial correlations of the number density of galaxies on large length scales (~ greater than 100 Mpc/h). I discuss this phenomena in the context of a very simple inflationary model. It is possible that these dramatic effects will be observed in upcoming large scale surveys like LSST.

Host: De Gouvea

Speaker Schedule

Keywords: Physics, Astronomy, colloquium

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