A proto-neutron star (PNS) is a newly formed compact object in a core collapse supernova. Using a series of phenomenological equations of state (EOS), we have systematically investigated the neutrino emission from the cooling phase of a PNS. The numerical code utilized in this study follows a quasi-static evolution of a PNS solving the general-relativistic stellar structure with neutrino diffusion. As a result, the cooling timescale evaluated from the neutrino light curve is found to be long for the EOS models with small neutron star radius and large effective mass of nucleons. It implies that extracting properties of a PNS (such as mass and radius) and the nuclear EOS is possible by a future supernova neutrino observation.
|ジャーナル||Journal of Physics: Conference Series|
|出版ステータス||出版済み - 3 20 2020|
|イベント||16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, 日本|
継続期間: 9 9 2019 → 9 13 2019
All Science Journal Classification (ASJC) codes