astrolunch: Christophe Pichon

Date: 
Tue, 23/02/2021 12:30 to 13:30
Title: Order out of chaos: the emergence of homeostatic thin galactic discs.
Abstract: I this talk I will argue that thin galactic disks are emerging structures of hierarchical clustering when secular processes take over. The appearance of such improbable structure is paradoxically made possible by shocks, feedback and turbulence within the disc. These processes radiates entropy, while gravitational wakes tighten a self-regulating loop towards marginal stability,  pumping free (rotational) energy from the circumgalactic medium.  This connection allows us to  relate disc evolution to the dynamics of the cosmic web

Zoom link
https://huji.zoom.us/j/84740565269?pwd=R2o3Vk9BUFRGZ0hzT3B6Zm9USmthQT09
Meeting ID: 847 4056 5269
Passcode: w31c0m3 

 
recording