| Abstract: Cosmological simulations are a powerful tool for understanding galaxy formation and evolution, and for studying the black hole-galaxy connection. As this problem spans many orders of magnitude in scale, we must rely on subgrid models to capture black hole physics such as seeding, accretion, dynamics, and feedback. In this talk, I will focus on black hole dynamics and seeding using the BRAHMA suite of cosmological simulations. I will describe techniques for post-processing the sub-resolution evolution of massive black hole binaries and the dynamical processes that drive them to merger and show how the combination of seeding and dynamics shapes predicted merger rates. I will also show how BRAHMA runs with subgrid dynamical friction modeling can reveal a population of wandering black holes. The simulations also help us identify the host galaxies of MBH mergers. Accurate modeling of MBH dynamics is essential for gravitational wave predictions and is essential for both gravitational wave predictions and EM observations of dual and offset AGNs. Link to the Event Video |