Three-dimensional simulation of a core-collapse supernova for a binary star progenitor of SN 1987A
Three-dimensional simulation of a core-collapse supernova for a binary star progenitor of SN 1987A
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SN 1987A 双星前身的核心塌缩超新星的三维模拟
DOI：
10.1093/mnras/stac1586
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发表时间：
2022
影响因子：
4.8
通讯作者：
Kei
中科院分区：
文献类型：
--
作者：
Nakamura;Ko; Takiwaki;Tomoya; Kotake;Kei
我们使用 SN 1987A 的二元演化祖模型在三个空间维度上展示了自洽、非旋转核心塌陷超新星模拟的结果。这个前身模型是由 14 颗恒星的缓慢合并演化而来，它满足大多数观测约束，例如红到蓝演化、寿命、总质量、坍缩时赫罗图的位置以及化学异常。我们的模拟从球对称塌陷开始，并在弹跳后 10 毫秒映射到三维坐标，以跟踪非球形流体动力学演化。我们在反弹后约 350 毫秒时获得了该前身的中微子驱动的激波复兴，从而形成了平均引力质量和自转周期约 0.1 秒的新生中子星。我们还讨论了与 SN 1987A 具有相同特征的银河事件的引力波和中微子信号的可探测性。在我们的最终模拟时间（反弹后约 660 毫秒），诊断爆炸能量虽然仍在增长，但与观察值（1.5 敌人）相比较小（0.14 敌人）。从模拟 () 中获得的 56Ni 质量也小于 SN 1987A () 中报告的质量。应该进行长期模拟，包括三维模型中几个缺失的物理成分，如旋转、磁场或更复杂的中微子不透明度，以弥合理论预测和观测值之间的差距。
We present results from a self-consistent, non-rotating core-collapse supernova simulation in three spatial dimensions using a binary evolution progenitor model of SN 1987A. Thisprogenitor model is evolved from a slow merger of 14 andstars, 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. Our simulation is initiated from a spherically symmetric collapse and mapped to the three-dimensional coordinates at 10 ms after bounce to follow the non-spherical hydrodynamics evolution. We obtain the neutrino-driven shock revival for this progenitor at ∼350 ms after bounce, leading to the formation of a newly born neutron star with average gravitational massand spin period ∼0.1 s. We also discuss the detectability of gravitational wave and neutrino signals for a Galactic event with the same characteristics as SN 1987A. At our final simulation time (∼660 ms post-bounce), the diagnostic explosion energy, though still growing, is smaller (0.14 foe) compared to the observed value (1.5 foe). The56Ni mass obtained from the simulation () is also smaller than the reported mass from SN 1987A (). Long-term simulation including several missing physical ingredients in our three-dimensional models such as rotation, magnetic fields, or more elaborate neutrino opacities should be done to bridge the gap between the theoretical predictions and the observed values.