Smaug – Hydrodynamic Simulations of First Galaxy Formation

A new series of numerical hydrodynamic simulations, called Smaug, recreates a region of the universe and reruns the formation of the first galaxies by systematically varying galaxy astrophysics models (such as the energy available from exploding stars, supernova, that can reheat neighbouring gas). The simulations are created with an advanced non-public version of Gadget-3, with production runs amongst the highest resolution yet achieved for a volume of 10Mpc/h on a side (gas particles of an incredible 100,000 solar masses each). These simulations are crucial for supporting Australian Square Pathfinder observations (in particular the Murchison Widefield Array). In addition, older volumes run to the present day from the international OWLS simulation series are capable of predicting the structures we see around us, and have been used to aid the Australian Square Kilometre Array Pathfinder telescope.