Type Ibn supernova SN~2010al: Powerful mass loss half year prior to the explosion

Nikolai Chugai

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arXiv · 2203.02717

Type Ibn supernova SN~2010al: Powerful mass loss half year prior to the explosion

Nikolai Chugai

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Abstract

Type Ibn supernova SN~2010al is explored to infer parameters of supernova and a circumstellar (CS) shell. The CS interaction model combined with the spectral model of 4600\AA\ blend suggests the explosion of a WR star with the energy of $(1-1.5)\times10^{51}$ erg inside a dense confined CS shell with the mass of $\sim0.1$\msun\ and kinetic energy of $\sim 10^{48}$ erg. The confined CS shell has been formed during the last 0.4 yr prior to the core collapse.

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Nikolai Chugai. 2022-03-05. Type Ibn supernova SN~2010al: Powerful mass loss half year prior to the explosion. https://arxiv.org/abs/2203.02717

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