"The Dynamical Evolution of Clusters of Galaxies"

Prof. Paul Ricker
University of Illinois, Urbana-Champaign

As the largest gravitationally bound objects in the Universe, clusters of galaxies provide important insights into the history of matter and energy on the largest scales. Forthcoming surveys of clusters using weak lensing, the Sunyaev-Zel'dovich effect, and X-rays will provide new information on the properties of dark energy and independent constraints on cosmological parameters, complementing the information yielded by the microwave background and Type Ia supernovae. These surveys will also provide data on the evolution of the cluster population with redshift that will help us to understand the complex physics occurring in cluster cores. I will describe our current understanding of cluster evolution, focusing on the ways in which numerical simulation can help to test cosmological models against cluster survey data and advance our understanding of the intracluster environment.



Thursday, April 22nd
Seminar is to be held at 4:00 PM in the conference room
on the second floor of Dearborn Observatory

Refreshments will be served at 3:30



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Department of Physics and Astronomy, Northwestern University
Dearborn Observatory, 2131 Sheridan Road, Evanston, IL 60208-2900
Tel: (847) 491-7650, Fax: (847) 491 3395