2023-12-01 11:00  P5A-1

Three-dimensional simulations of core-collapse supernovae from the explosion to supernova remnant toward elucidating the explosion mechanism, neutron star, and chemical evolution

Dr. Masaomi Ono

Multidimensionality necessary for a successful explosion in theories of core-collapse supernova (CCSN) explosions has suggested that CCSNe are essentially aspherical. Observations of spatially resolved nearby CCSNe, e.g., SN 1987A and Cassiopeia A (Cas A), have also revealed non-spherical natures. However, how the explosions are connected to their supernova remnants has been unclear due to several factors, e.g., matter mixing during the shock propagation inside the stellar material. Therefore, we have been conducting projects to link CCSN explosions to their supernova remnants via three-dimensional (3D) hydrodynamical simulations focusing on SN 1987A and Cas A so far. Together with theoretical models for estimating several observables, we have attempted to understand the mechanism of the explosion and properties of the progenitor star and compact object by comparing them with observations. Recent breakthrough observations by ALMA and JWST, i.e., 3D carbon monoxide and silicon monoxide distributions and the 3D inner ejecta morphology traced by iron lines, have further provided interesting features to be elucidated. This talk introduces the results of our recent studies, including those on molecule formation in the ejecta of SN 1987A (MO+2023, submitted to ApJS: arXiv:2305.02550).