Prof. Dr. Volker Springel (MPA Garching / LMU Munich)

Abstract: Numerical calculations of cosmic structure formation have become a powerful tool in astrophysics. Starting right after the Big Bang, they are not only able to accurately predict the dark matter backbone of the cosmic web far into the non-linear regime, but are also capable of following baryonic physics with rapidly improving fidelity. In this talk, we will review the methodology and selected results of recent structure formation simulations that follow large parts of the observable universe. We will discuss some of the primary challenges in modelling strong, scale-dependent feedback processes that regulate star formation in galaxies, and highlight the important role played by supermassive black holes in galaxy formation. We will also discuss simulation results for cosmic reionization and magnetic field amplification during non-linear structure formation, and touch upon how simulations can help to constrain the cosmological model. Finally, we will highlight the challenges involved in obtaining future multi-physics, multi-scale simulations that aim for more reliable and predictive simulations. This goal is also profoundly affected by current technological trends, such as GPU- and exascale computing, and shifts in popular methodologies, such as the rise of machine learning.

The talk will take place in Lecture Hall 6 in the Main University Building at 4pm. eKVV