Supernova neutrinos in the proto-neutron star cooling phase and nuclear matter

Ken'Ichiro Nakazato, Hideyuki Suzuki

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Article number012089
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - Mar 20 2020
Event16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, Japan
Duration: Sept 9 2019Sept 13 2019

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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