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This Week at Physics

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Event Number 3313

  Thursday, March 13th, 2014

Astronomy Colloquium
"The secret lives of Galaxy Clusters"
Time: 3:30 pm
Place: 4421 Sterling Hall
Speaker: Brian O'shea, Michigan State University
Abstract: Galaxy clusters have the potential to be highly accurate probes of cosmological parameters. However, they are also very interesting astrophysical objects in their own right! The properties that make clusters irritating to those who wish to use them for cosmology - deviations from sphericity and hydrostatic equilibrium, shocks, mergers, and a variety of baryonic processes - provide a tremendous amount of information about these massive beasts. I will present recent efforts to understand the effects that correctly modeling the properties of gas in cosmological simulations have on the observable properties of clusters, focusing on shocks, AGN heating, and the non- thermal components of the intracluster medium, including cosmic rays and magnetic fields.
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