Title: Galaxy Simulations in the Era of Exascale
Abstract:
Over the last several decades, galaxy formation theory has adopted ``feedback” as an essential process affecting galaxy evolution. Winds generated by supernova explosions of massive stars are predicted to eject large quantities of mass and energy from the ISM of galaxies over cosmic time, regulating their growth rates and polluting the CGM and IGM with heavy elements. While this picture is compelling, our current observational and theoretical constraints on the amount of mass and energy ejected by these winds are uncertain by orders of magnitude. In this talk, I will describe our group’s efforts to better understand the physics of supernova-driven outflows using extremely high resolution simulations. Employing the GPU-based code Cholla on the world’s fastest computers, we can capture the effects of individual explosions on galaxy scales, allowing us to link predictions made by small-scale idealized simulations to halo-scale zooms with a cosmological context.
