March 5, 2019
Speaker: Blakesley Burkhart
Contact Information: astroblay@gmail.com
Title: A Predictive Theory of Star Formation and Turbulence Driving Across Cosmic Time
Abstract: Our current view of the interstellar medium (ISM) is as a multiphase environment where magnetohydrodynamic (MHD) turbulence affects many key processes that govern the evolution of galactic disks include star formation. In this talk, I shall present an overview of new analytic models connecting turbulence, star formation, feedback, and disk instability. I will show that the turbulence in discs can be powered primarily by star formation feedback, radial transport, or a combination of the two. 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 and star formation efficiency from pc size scales (GMCs) to kpc size scales in galaxies and provides predictions for upcoming high-z JWST observations.
Visit Schedule:
Tuesday (5 Mar 2019):
10:30 a.m.: Coffee / Talk Prep
11:00 a.m.: Colloquium
12:15 p.m.: Bahcall Lunch
1:30 p.m.: Eve Ostriker (136 Peyton)
2:00 p.m.: Jeong-Gyu Kim (005 Peyton)
2:30 p.m.: Ed Turner (208 Peyton)
3:00 p.m.: Jim Stone (113 Peyton)
3:30 p.m.: Tea with grad students
4:00 p.m.: Renyue Cen (111 Peyton)
4:30 p.m.: J Richard Gott (106 Peyton)
5:00 p.m.: Silvio Sergio Cerri (119 Peyton)
5:30 p.m.: Vladimir Zhdankin (102 Peyton)
6:00 p.m.: DINNER WITH HOST - meet in Grand Central
Dinner Sign-up (students have priority; 8 MAX) - add your name here:
1. Speaker
2. Faculty host: Ed Turner
3. Postdoc host: Vladimir Zhdankin
4. Amy
5. Alwin
6. Philip Mocz
7. Jimmy Juno
8. Eric
NO MORE THAN 8 PEOPLE (otherwise it is very difficult to properly interact with the speaker)