“KMI colloquium” 13th July (Wed)  17：00 –
Speaker : Kenta Hotokezaka (RESCEU, University of Tokyo)
Title : Astrophysics of compact binary mergers
Place : ES635 & ZOOM (Hybrid)

Abstract:
A hundred of compact binary mergers have been observed by the LIGO and Virgo detectors. One of the biggest questions is what is the origin of the mergers. I will discuss the observed spin distribution that seems to support the field binary scenario as the main channel for merging black holes. I will also talk about the implications of multimessanger observations of binary neutron stars. I’ll focus particularly on the following questions: how well we understood r-process in neutron star mergers? Are neutron star mergers GRB progenitors? Can gravitational wave be a probe of QCD phase transition? When gravitational-wave cosmology will be as precise as electromagnetic cosmology?