Three-dimensional Boltzmann-Hydro code for core-collapse in massive stars I. special relativistic treatments

Understand

We propose a novel numerical method for solving multi-dimensional, special relativistic Boltzmann equations for neutrinos coupled to hydrodynamics equations.

• It is meant to be applied to simulations of core-collapse supernovae.
• We handle special relativity in a non-conventional way, taking account of all orders of v/c.
• Consistent treatment of advection and collision terms in the Boltzmann equations is the source of difficulties, which we overcome by employing two different energy grids: Lagrangian remapped and laboratory fixed grids.