High redshift observations of Type Ia Supernovae (SN) provided the first convincing evidence for the existence of Dark Energy (DE). These observations remain one of the most useful tools for constraining cosmological parameters. Despite numerous advances in observational and theoretical techniques towards understanding Type Ia SN, there remain many potential systematic uncertainties that can limit the cosmological precision obtainable from SN surveys. These systematic uncertainties have become the limiting factor in SN constraints on DE. It is the goal of the Supernova Hub to carry out a research program to understand and reduce these potential systematic errors, thereby improving SN as cosmological probes.
The data will also be used to compare to detailed 3-dimensional Type Ia SN simulations produced by the University of Chicago Alliances Center for Astrophysical Thermonuclear Flashes and their suite of numerical codes. By providing a comprehensive dataset and analysis code for comparison, theoretical models will be evaluated much more rigorously than in previous efforts, leading to a better understanding of the Type Ia explosion mechanism. The ultimate goal is that FLASH simulations provide useful feedback into SN-cosmology analyses by constraining or characterizing SNIa properties such as the nature of color variations or why the brightness depends slightly on the host-galaxy mass.