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Astronomy Colloquium

Thursday, February 19, 2015
12:00 AM
411 West Hall

"Blowing in the Quasar Wind: Feedback from Black Hole Outflows in Major Galaxy Mergers"

Large-scale outflows of gas from galaxies ("galactic winds") have a profound impact on their hosts. They act as negative feedback on both star formation and the activity of supermassive black holes. Though much is known about winds in nearby spiral galaxies, the nature of winds in galaxy mergers remains more uncertain. I will discuss new observations of galactic winds in galaxy mergers that reveal in detail the physical structure of multiple gas phases and probe the power sources of these winds. In many cases, a luminous, supermassive black hole is implicated in powering the wind. These new observations harness integral field spectrographs on the largest optical telescopes.

David Rupke, Rhodes College