Core-collapse Supernovae

My research centers on the theoretical modeling of core-collapse supernovae (CCSNe), with a particular focus on neutrino transport. Neutrinos carry away most of the gravitational energy released by the core-collapse, and are believed to drive the explosion. The accurate treatment of neutrinos is essential for understanding CCSN dynamics and the neutrino signals.

A central thread of my work is the multi-dimensional Boltzmann neutrino radiation-hydrodynamics cod. Rather than relying on approximate moment closures, our code directly solves the Boltzmann equatio, providing first-principles access to the full angular and spectral distribution of neutrinos in momentum space.Using this framework, I study a range of problems in the post-bounce phase, including proto-neutron star convection, asymmetric neutrino emission, and late-time fallback accretion onto the proto-neutron star. My current main focus is the role of collective neutrino oscillations—particularly fast flavor conversion (FFC) and collisional flavor instability—in CCSN dynamics.