Current status and open issues in core-collapse supernova theory<\/p>\n\n\n\n
speaker: Hiroki Nagakura<\/p>\n\n\n\n
Abstract:<\/p>\n\n\n\n
Core-collapse supernova (CCSN) explosion is a fiery death of massive\u00a0stars. The explosion mechanism involves complex interplay between micro-\u00a0and macroscopic physics, and numerical simulations have been used in\u00a0efforts to uncover the roles of each physics. In this seminar, I give an\u00a0overview of the progress with paying special attention to the results of\u00a0our Princeton’s supernova group and Japanese one. In the former group,\u00a0we revealed some common and progenitor dependent features of explosion\u00a0dynamics and their observational consequences such as neutrino signals\u00a0and gravitational waves; for the latter group, we have studied the\u00a0detailed radiation-hydrodynamics features based on 2D\/3D CCSN\u00a0simulations with full Boltzmann neutrino transport that are also being\u00a0in scientific running on “Fugaku”. Underlining the current status, I\u00a0also discuss a key uncertainty in CCSN theory, that is collective\u00a0neutrino oscillation. This potentially changes the energy spectrum and\u00a0angular distribution of neutrinos, indicating that the fluid dynamics\u00a0(including explosive dynamics), nucleosynthesis and neutrino signals\u00a0would be substantially impacted. With presenting our recent results\u00a0(collective neutrino oscillation ubiquitously occurs in CCSN\u00a0environments), I discuss future prospects of developing the theory of\u00a0CCSNe with quantum kinetic treatments of neutrinos, i.e., beyond full\u00a0Boltzmann neutrino transport.<\/p>\n","protected":false},"excerpt":{"rendered":"