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Astronomy Colloquium
Supercomputer Simulations of the Universe: Interfacing galaxy formation with precision cosmology
Date: Thursday, March 14th
Time: 3:30 pm - 4:30 pm
Place: 4421 Sterling Hall
Speaker: Volker Springel, Max-Planck Institute for Astrophysics
Abstract: Numerical simulations of cosmic structure formation have become a powerful tool in astrophysics. Starting right after the Big Bang, they predict the dark matter backbone of the cosmic web far into the non-linear regime and follow complex galaxy formation physics with rapidly improving fidelity. In my talk, I will review the methodology and selected results of recent hydrodynamical galaxy formation simulations, such as the IllustrisTNG MillenniumTNG projects. In particular I will discuss some of the primary challenges in modelling strong, scale-dependent feedback processes that regulate star formation, and highlight the important role played by supermassive black holes in galaxy formation. I will also discuss extremely large simulations and describe how they help to make reliable predictions for the impact of baryons and massive neutrinos on cosmological observables, effects that need to be understood to make full use of upcoming new survey data.
Host: Ke Zhang
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