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Astronomy Colloquium

Wednesday, May 4, 2022
4:00pm to 5:00pm
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Cahill, Hameetman Auditorium
The IllustrisTNG Project
Lars Hernquist, Mallinckrodt Professor of Astrophysics, Center for Astrophysics, Harvard University,

Greenstein Lecture

A predictive theory of galaxy formation remains elusive, even after more than 50 years of dedicated effort by many renowned astrophysicists. The problem of galaxy formation is made difficult by the large range in scales involved and the many non-linear physical processes at play. This talk describes a new generation of numerical models that attempts to overcome these difficulties using novel schemes for solving the fluid equations on a moving mesh. In particular, I will describe an ongoing project that extends results from the Illustris simulation by employing refined models for feedback from stars and supermassive black holes. Several applications will be described, including the baryon cycle of galaxies, the fragility of galactic disks, the regulation of star formation in central and satellite galaxies, and the statistics of large-scale structure, in the context of high precision cosmological surveys.

To view this talk via YouTube, please visit

For more information, please contact Jim Fuller by email at [email protected] or visit