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Preprint Oct 2026

Three-flavor neutrino Boltzmann transport and flavor instabilities in long-lived neutron-star merger remnants

Binary neutron-star (BNS) mergers are multimessenger sources whose kilonova emission and nucleosynthesis depend sensitively on neutrino microphysics and flavor conversion. Most BNS merger simulations assume $\mu$-$\tau$ neutrino degeneracy in a two-flavor treatment. We investigate the fast flavor instability (FFI) and...

H. Ng, Jia-Bao Liu, A. Offermans et al. · 0 citations
Preprint Sep 2026

A Multidimensional General-Relativistic Boltzmann Solver for Neutrino Transport: Implementation, Discretization and Optimization

We present the implementation of a multidimensional general-relativistic Boltzmann solver for neutrino transport using the finite volume method. We extend the general-relativistic magnetohydrodynamics solver \texttt{Gmunu} to discretize the full $6$D phase space. We discretize the momentum space in spherical coordinate...

A. Offermans, H. Ng, Patrick Chi-Kit Cheong et al. · 0 citations

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