Core-collapse simulation of SN 1987A binary progenitor and its multimessenger signals
Core-collapse simulation of SN 1987A binary progenitor and its multimessenger signals
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SN 1987A双元祖星及其多信使信号的核心塌陷模拟
DOI：
10.1088/1742-6596/2156/1/012232
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Ko Nakamura
中科院分区：
文献类型：
--
作者：
Ko Nakamura
我们使用SN 1987 A的双星演化祖先模型进行了一个三维自洽的核心坍缩超新星模拟。这个模型是基于14颗M和9颗M恒星的缓慢合并，它满足了大多数观测约束，如红蓝演化、寿命、总质量和坍缩时在赫兹-罗素图中的位置以及化学异常。我们发现，这个祖先模型成功地呈现了爆炸，并留下了一颗1.53 M的中子星星，其反冲速度为70 kms − 1，自旋周期为0.1 s。假设神冈-II的探测器灵敏度和超新星的距离为51千秒差距，我们在一秒钟内获得16个中微子探测事件。本文还讨论了它的引力波信号中的一些特征模式。
We perform a three-dimensional self-consistent core-collapse supernova simulation using a binary evolution progenitor model of SN 1987A. This progenitor model is based on a slow-merger of 14 M∹ and 9 M∹ stars and it satisfies most of the observational constraints such as red-to-blue evolution, lifetime, total mass and position in the Hertzsprung-Russell diagram at collapse, and chemical anomalies. We find that this progenitor model successfully present explosion and leave a 1.53 M∹ neutron star with a kick velocity of 70kms− 1 and a spin period of 0.1 s. Assuming a detector sensitivity of Kamiokande-II and the distance to the supernova of 51 kpc, we obtain 16 neutrino detection events in one second. Some characteristic modes in its gravitational wave signal are also discussed in this article.