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Astronomy Colloquium - "Turbulent Beginnings: A Predictive Theory of Star Formation in the Interstellar Medium"

Event Type
Seminar/Symposium
Sponsor
Department of Astronomy
Location
Kaler Classroon, Astronomy Building
Date
Apr 25, 2023   3:45 pm  
Speaker
Blakesley Burkhart, Rutgers University
Contact
Rebecca Bare
E-Mail
rsbare@illinois.edu
Phone
217-265-8226
Views
1
Originating Calendar
Astronomy Colloquium Speaker Calendar

Our current view of the interstellar medium (ISM) is as a multiphase environment where magnetohydrodynamic (MHD) turbulence affects many key processes: star formation, cosmic ray acceleration, and the evolution of structure in the diffuse ISM. In part 1 of this talk, I shall review the fundamentals of galactic turbulence and discuss progress in the development of new techniques for comparing observational data with numerical MHD turbulence simulations. In part 2, I will focus on how turbulence affects the long-standing problem of star formation. From scales of giant molecular clouds (GMCs), I will demonstrate how the star formation efficiency can be analytically calculated from our understanding of how turbulence, gravity, and stellar feedback induce density fluctuations in the ISM via a probability distribution function analysis. This analytic calculation predicts star formation rates from pc size scales (GMCs) to kpc size scales in galaxies.


https://go.illinois.edu/AstroColloquium

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