Title: From Subgrid Physics to Cosmology: Modelling Galaxy Formation Through Simulations
Abstract: Simulation is a powerful tool that plays a pivotal role at the intersection of computational astrophysics, galaxy formation, and cosmology. Because the physical processes involved span a vast range of spatial and temporal scales, subgrid models serve as essential bridges for phenomena that lie below the resolution limits of current simulations. These models critically shape the predictive power of simulations and our understanding of the Universe. In this talk, I will present strategies for calibrating subgrid models to reproduce a realistic Universe and examine how different model choices influence the properties of simulated galaxies. I will also discuss how simulations can be used both to interpret observations and to propose new mechanisms for the formation and evolution of galaxies. Finally, I will explore how pushing simulations to their limits can offer meaningful constraints on cosmology.