Mötesplats Rydberg - The long-term evolution of turbulent discs in high-redshift galaxies

The long-term evolution of turbulent discs in high-redshift galaxies 

With Joss Bland-Hawthorn, Laureate Professor of Physics at the University of Sydney and Director of the Sydney Institute for Astronomy.

Professor Joss Bland-Hawthorn will be formally introduced by Senior Lecturer Oscar Agertz, who will also serve as the seminar moderator.

Abstract
Most disc galaxies go through an early epoch of being “gas-rich," an era that is now actively explored by the James Webb and ALMA telescopes. This high gas-fraction phase got going much sooner than anticipated by theory and cosmological simulations. A new class of controlled simulations of these early times, that we dub NEXUS, reveals that these turbulent galactic discs have extraordinary properties - unexpectedly, galactic structures such as spiral arms, stellar and gaseous bars, even bulges, all form under these conditions. Moreover, baryon sloshing in 3D driven by strong feedback from young stars gives rise to thickened stellar discs. We argue this is the most likely origin of thick stellar discs observed today. 

Hybrid meeting

You can attend the Rydberg lecture hall at 15:15. Coffee and cake will be served from 15.00.
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