Connecting Simulations of Violent Pre-supernovae Eruptions From Massive Stars to X-ray Observations

Mass loss from massive stars near the ends of their lives is not well understood. There is a great deal of evidence suggesting that this process is not dominated by steady radiative winds from the surface, but that more eruptive episodes occur also. Recently, a new subset of core-collapse supernovae have been observed that display luminous transient some days or months before the main supernova. In this project, we will model these pre-supernova eruptive transients using multidimensional simulations of unsteady nuclear burning in massive stars near to core collapse. We will model the emission from these events using an open-source radiative transfer code.