Cosmological Simulations of the Intergalactic Medium Evolution. III. SPH Simulations

Abstract We have developed a new numerical algorithm to study the joint evolution of galaxies and intergalactic medium (IGM) in cosmological context, with specific goal studying deposition dispersion metals IGM. This combines standard gasdynamical simulate IGM, semi-analytical model describe galaxies, prescriptions for galaxy formation, accretion, mergers, tidal disruption. The main designing this was performance. In its current version, can volumes containing thousands few days, using between 12 32 processors. is particularly suited parameter surveys (both parameters physical parameters) since large number simulations be completed fairly short amount time. Furthermore, provides platform development testing treatments subgrid physics, which could then implemented into other algorithms. paper, we present, illustration, two (20 Mpc) 3 volume ∼1200 at z = 0.