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Astronomy Colloquium - "Galaxy clusters: laboratories for extreme plasma physics"

SpeakerBrian O’Shea Department of Physics & Astronomy and Department of Computational Mathematics, Science, and Engineering Michigan State University
Date Mar 10, 2015
Time 3:45 pm  
Location Astronomy 134
Sponsor Department of Astronomy
Contact Rebecca Bare
Event type Seminar/Symposium
Views 57

Galaxy clusters are the most massive virialized objects in the universe, and have the potential to be highly accurate probes of cosmological parameters. A fundamental challenge for cluster cosmology is to estimate the masses of these objects using observational proxies such as X-ray luminosity and temperature, which are complicated by the merger history of clusters and the microphysical properties of the intracluster medium.  These effects, while frustrating to cosmologists, provide a rich laboratory for exploring the plasma physical processes that are occurring in these massive objects.  In this talk I will present recent efforts to understand the effects that several plasma processes - including conduction and AGN feedback - have on the observable properties of galaxy clusters. 

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