UConn Physics Colloquium
The Evolution of Galaxies and Black Holes: Clues in the Local Univers
Department of Physics and Astronomy
Johns Hopkins University
We now live in the era of precision cosmology. For the first time, we have accurate measures of the age, size, and basic composition of the universe. We also have a model that accounts for the origin and subsequent evolution of the density fluctuations in the dominant non-baryonic dark matter component that define the large-scale structure of the universe. The biggest challenge now is to understand the complex processes that regulate how ordinary baryons cool, shed angular momentum, and flow into the centers of the dark matter halos where they form stars and a central supermassive black hole. A major uncertainty is the feedback effects that the ionizing radiation, kinetic energy, and heavy elements that are produced by stars and/or supermassive black holes have on the surrounding gas from which these objects form. In my talk I will review the current state of affairs and describe how observations of the relatively local universe are providing key insights into the formation and evolution of galaxies and supermassive black holes.
Friday, October 5, 2007
Gant Science Complex
(We will meet for refreshments prior to the talk at 3:30 p.m., in the Gant Science Complex, Physics Library, Room P-103.)