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arXiv · 2501.07134

PISN 2018ibb: radioactive emission of [O III] lines

Nikolai N. Chugai
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Abstract

Supernova 2018ibb of the PISN category related to the dynamical instability of oxygen core in a supermassive star induced by pair-creation shows at the nebular stage strong [\oiii] emission lines of an uncertain origin. I propose a simple model that demonstrates a possibility of [O III] lines emission from the supernova oxygen matter ionized and heated by the $^{56}$Co radioactive decay. The reason is pinpointed by which the [O III] line luminosity among supernovae of PISN category can vary in a broad range.

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Nikolai N. Chugai. 2025-01-13. PISN 2018ibb: radioactive emission of [O III] lines. https://arxiv.org/abs/2501.07134

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