论文标题
光曲线和轴轴不稳定超新星的事件速率
Light Curves and Event Rates of Axion Instability Supernovae
论文作者
论文摘要
最近有人提出，外来颗粒可以触发新的恒星不稳定性，如果产生并达到恒星等离子体中的E-E+对不稳定性类似于E-E+对的不稳定性。在这项研究中，我们构建了由新的不稳定性预测其观察性特征引起的轴突不稳定性超新星（AISN）模型。我们专注于重轴状颗粒（ALP），质量为〜400 keV-2-2 meV，并与g_ {ag} 〜10^{ - 5} Gev^{ - 1}的光子耦合。发现固定恒星质量的56NI质量和爆炸能量显着增加。结果，当ALP质量等于电子质量时，邻固体的光曲线的峰值时间比标准配对超新星的高峰时间早于10--20天。同样，根据初始质量函数的高质量临界值，相对于配对超新星的事件速率比配对超新星的事件速率高1.7--2.6倍。
It was recently proposed that exotic particles can trigger a new stellar instability which is analogous to the e-e+ pair instability if they are produced and reach equilibrium in the stellar plasma. In this study, we construct axion instability supernova (AISN) models caused by the new instability to predict their observational signatures. We focus on heavy axion-like particles (ALPs) with masses of ~400 keV--2 MeV and coupling with photons of g_{ag}~10^{-5} GeV^{-1}. It is found that the 56Ni mass and the explosion energy are significantly increased by ALPs for a fixed stellar mass. As a result, the peak times of the light curves of AISNe occur earlier than those of standard pair-instability supernovae by 10--20 days when the ALP mass is equal to the electron mass. Also, the event rate of AISNe is 1.7--2.6 times higher than that of pair-instability supernovae, depending on the high mass cutoff of the initial mass function.
