论文标题
基于光曲线的系统分析，对核心 - 崩溃超新星的爆炸时间尺度的限制
Constraints on Explosion Timescale of Core-Collapse Supernovae Based on Systematic Analysis of Light Curves
论文作者
论文摘要
核心崩溃超新星的爆炸机制尚未完全理解。在这项工作中，我们根据$^{56} $ ni对超新星爆炸合成的$^{56} $ ni给出约束。首先，我们系统地分析了82个剥离的超新星（sesne）的多带光曲线，以获得降压光曲线，这是源自多频谱光谱分布的共体光曲线的最大样品之一。我们测量了光曲线的下降时间尺度和峰值光度，并估计弹出质量（$ m _ {\ rm ej} $）和$^{56} $ ni质量（$ m _ {\ rm ni} $），以将观察到的属性与爆炸物体联系起来。然后，我们进行一维水动力学和核合成计算，改变了祖细胞质量和爆炸时间尺度。从计算中，我们表明，$^{56} $ ni驱动的SNE可以达到的最大$^{56} $ ni质量表示为$ m _ {\ rm ni} \ lyssim 0.2 \ m _ {\ m _ {\ rm ej} $。比较观测值和计算的结果，我们表明爆炸时间尺度短于0.3秒，解释了综合的$^{56} $ ni sesne的质量。
Explosion mechanism of core-collapse supernovae is not fully understood yet. In this work, we give constraints on the explosion timescale based on $^{56}$Ni synthesized by supernova explosions. First, we systematically analyze multi-band light curves of 82 stripped-envelope supernovae (SESNe) to obtain bolometric light curves, which is among the largest samples of the bolometric light curves of SESNe derived from the multi-band spectral energy distribution. We measure the decline timescale and the peak luminosity of the light curves and estimate the ejecta mass ($M_{\rm ej}$) and $^{56}$Ni mass ($M_{\rm Ni}$) to connect the observed properties with the explosion physics. We then carry out one-dimensional hydrodynamics and nucleosynthesis calculations, varying the progenitor mass and the explosion timescale. From the calculations, we show that the maximum $^{56}$Ni mass that $^{56}$Ni-powered SNe can reach is expressed as $M_{\rm Ni} \lesssim 0.2 \ M_{\rm ej}$. Comparing the results from the observations and the calculations, we show that the explosion timescale shorter than 0.3 sec explains the synthesized $^{56}$Ni mass of the majority of the SESNe.
