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Abstract

Supernova 1987A (SN 1987A) is a unique object for understanding the early evolution of a core-collapse supernova remnant thanks to its proximity and youth. Recent ALMA and JWST observations of the inner ejecta of SN 1987A, revealing a ring-like carbon monoxide gas and a broken dipole iron distributions, respectively, provided potential clues to unveil not-yet-elucidated explosion mechanisms of core-collapse supernovae. We have conducted long-term 3D hydrodynamical simulations and estimated relevant observables based on the 3D models to link the progenitor and explosion properties with those at early supernova remnant phases; the results suggested, e.g., the progenitor formation through a binary merger, an asymmetric bipolar-like explosion with a natal kick of the (undetected) neutron star, and a non-thermal emission from the neutron star. Motivated by the molecular gas distributions revealed by ALMA, the aspherical explosion's impact on the molecular formation in the ejecta was also investigated. This talk highlights several breakthrough SN 1987A observations and our ongoing attempts with open issues.