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UID:UW-Physics-Event-4112
DTSTART:20160310T213000Z
DTEND:20160310T230000Z
DTSTAMP:20260419T145151Z
LAST-MODIFIED:20160304T151638Z
LOCATION:4421 Sterling Hall\, Coffee and Cookies 3:30 PM\, Talk at 3:4
 5 PM
SUMMARY:Toward a physically-predictive theory of galaxy formation: res
 olved stellar and black hole feedback\, Astronomy Colloquium\, Claude-
 Andre Faucher-Giguere\, Northwestern University
DESCRIPTION:Over the past few years\, cosmological hydrodynamic simula
 tions have begun to produce galaxy populations with properties that ag
 ree broadly with observations. The successes of most existing simulati
 ons however rely on carefully tuning parameters of sub-grid models for
  core physical processes such as star formation\, stellar feedback\, a
 nd supermassive black holes. I will describe a research program that a
 ims to greatly improve the predictive power of galaxy formation models
  by directly resolving some of the key physical processes in the ISM o
 f galaxies and developing approximations for unresolved processes that
  are directly calibrated using small-scale calculations. This approach
  largely eliminates the need for tunable parameters. I will present so
 me key results from the FIRE ("Feedback In Realistic Environments") co
 smological simulations developed using this approach\, including on th
 e physics shaping the galaxy stellar mass function\, the generation of
  galactic winds\, the chemical enrichment of galaxies\, and observatio
 nal diagnostics of circum-galactic gas flows. I will conclude by outli
 ning our on-going work to model supermassive black hole growth and fee
 dback\, from galactic nucleus to cosmological scales.<br><br>
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URL:https://www.physics.wisc.edu/events/?id=4112
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