Josh Borrow’s work centers around the development of cosmological galaxy formation models. Cosmological galaxy formation simulations take a representative volume of universe (usually a cube of a few hundreds of millions of light year’s on a side) and evolve it from cosmic dawn to the present day. Through the inclusion of key physics, from gravity and hydrodynamics to so-called ‘sub-grid’ models dealing with star formation, radiative cooling, and other processes that happen below the resolution limit of the simulation, these simulations enable key theoretical insights into the way that galaxies form and evolve.

Josh works on all aspects of cosmological simulations; working on the high performance computing architecture required to develop and analyze them, deep investigations into the numerics behind how and why numerical hydrodynamics schemes work, and developing novel sub-grid models.