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New Developments in Theoretical Modelling of SN 1987A

  • Ken’ichi Nomoto (a1), Toshikazu Shigeyama (a1), Shiomi Kumagai (a1) and Masa-aki Hashimoto (a1)
Abstract

We summarise recent developments in modelling SN 1987A including the progenitor’s evolution, explosive nucleosynthesis, optical, X- and γ-ray light curves, and dust formation. The distribution of heavy elements in the ejecta is inferred from the light curves. The pre-peak optical light curve as well as early emergence of X- and γ-ray indicate the mixing of 56Ni into the hydrogen-rich envelope. The plateau-like peak of the optical light curve is well reproduced if hydrogen is mixed into the deep core. The flat X-ray light curve observed by Ginga would be due to the clumpy structure of the core. The progenitor’s blue-red-blue evolution and nitrogen abundance suggest that the progenitor’s hydrogen-rich envelope had mass M env = 7 − 11 M and was almost completely mixed.

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