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Monday 5 April at 2pm @ JAC
George Mitchell - Saint Mary's University
"Numerical Simulations of Compressible Turbulence from an Observer's Point of View"
ABSTRACT: "It has become possible fairly recently to
carry out three dimensional
numerical simulations of compressible gas with self-gravity included.
These simulations are commonly described as models of supersonic
turbulence. Results of these simulations are challenging many long-held
ideas, so much so that the practitioners speak of "a new paradigm" of
molecular cloud structure and star formation. In the first part of this
talk I will attempt to summarize the applicability and results of
recent numerical experiments, emphasizing departures from the "standard
model". Then, I will present some results of ongoing observations
designed to test some of the model predictions. Finally, I will argue
that the current "turbulent" situation provides plenty of scientific
justification for devoting a considerable fraction of the time of our
new generation of wide-field instruments (e.g. Harp-B, SCUBA2, WFCAM,
and WIRCAM) to large surveys."
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