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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4376
DTSTART:20161208T213000Z
DTEND:20161208T110000Z
DTSTAMP:20260414T050908Z
LAST-MODIFIED:20161202T194210Z
LOCATION:4421 Sterling Hall\, Coffee and cookies 3:30 pm\, Talk at 3:4
 5PM
SUMMARY:The Turbulent Origin of Stars\, Astronomy Colloquium\, Phillip
  Chang\, UW Milwaukee
DESCRIPTION:Recent numerical experiments on the star formation rate on
  small scales find that the star formation rate is much faster than th
 e Kennicutt-Schmidt law which well-characterizes star formation on gal
 actic scales\, and also shows that star formation accelerates with tim
 e. Motivated by these results\, I will discuss a new dynamical theory 
 of star formation in a turbulent medium that seeks to explain these ob
 served numerical results. I will survey the various theories of star f
 ormation and their shortcomings. I will then discuss how we extend pre
 vious theories of collapse by considering turbulence as a dynamical va
 riable and closing the fluid equations with a new form of the energy e
 quation. The resulting theory explains these previous numerical result
 s and makes a few predictions that have recently been numerically veri
 fied as well as some numerical surprises. I will discuss the implicati
 ons of this theory on observations.
URL:https://www.physics.wisc.edu/events/?id=4376
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