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The project proposes to better understand the fueling of supermassive black holes from galactic scales using multi-scale numerical modelling. We will use a suite of high-resolution nested-mesh (general-relativistic) magnetohydrodynamic simulations, exploiting recent developments in GPU-accelerated computations, to resolve the thermodynamics of the multiphase gas and the magnetic structure during the accretion process. By connecting physics at various scales, our approach aims to bridge the gap between the galactic scale and the event horizon for supermassive black holes in elliptical galaxies (e.g., M87). This will provide more accurate initial and boundary conditions for horizon-scale simulations, which will help to construct a more consistent model of black hole accretion at smaller radii. It will also allow for a more comprehensive sub-grid model of black hole growth and feedback in large-scale galaxy formation cosmological simulations. |
Max Planck Institute for Astrophysics, Germany.