CCA Colloquium: Masaru Shibata

Title: Exploring neutron star mergers in numerical relativity

Abstract: Numerical relativity plays many important roles in astrophysics and general relativity, e.g., in understanding mergers of black holes and neutron stars and formation processes of black holes for a wide variety of stellar collapse. In this talk, I will summarize our understanding of the merger and post-processes for neutron-star binaries introducing our latest results of numerical relativity simulations. I will pay particular attention to nucleosynthesis of heavy elements and provide predictions for the future observations. A speculation for the post-merger process of GW170817 based on the latest simulation results will be also given.

October 10, 2025