论文标题
在二元种群合成模型中，成对不稳定性超新星的欧几球可检测性与合并二元黑洞一致
Euclid detectability of pair instability supernovae in binary population synthesis models consistent with merging binary black holes
论文作者
论文摘要
我们根据二元人群模型来推断欧几里得太空望远镜运行期间的成对不稳定性超新星（PISNE）的预期检测次数。我们的模型在$ \ sim 9-10 $ $ m_ \ odot $的主要BH质量下重现了全球速率，并且在二进制BH合并率中与最近观察结果一致的主要BH质量分布的总体梯度。我们考虑不同的PISN条件，具体取决于$^{12} $ c $（α，γ）^{16} $反应速率。基金和3σ$型号分别采用标准和$3σ$ -smaller反应率。我们的基金模型预测，欧几里得检测几种贫乏的Pisne。对于$3σ$型号，如果$ \ sim 1 $检测如果恒星质量分布扩展到$ m _ {\ max} = 600 m_ \ odot $，则预期会欧几里得的氢贫困PISN，但如果$ m _ {\ max} = 300 m_ \ odot $。我们也许可以通过观察到的PISN速率来区分基准和3σ$模型。尽管$ m _ {\ max} $与反应率之间仍然存在堕落，但这将有助于我们限制二进制BHS的起源和反应率。通过随访观测获得的光曲线和光谱的PISN喷射质量估计对于脱离了堕落非常重要。
We infer the expected detection number of pair instability supernovae (PISNe) during the operation of the Euclid space telescope based on binary population models. Our models reproduce the global maximum of the rate at the primary BH mass of $\sim 9-10$ $M_\odot$, and the overall gradient of the primary BH mass distribution in the binary BH merger rate consistent with recent observations. We consider different PISN conditions depending on the $^{12}$C$(α, γ)^{16}$O reaction rate. The fiducial and $3σ$ models adopt the standard and $3σ$-smaller reaction rate, respectively. Our fiducial model predicts that Euclid detects several hydrogen-poor PISNe. For the $3σ$ model, detection of $\sim 1$ hydrogen-poor PISN by Euclid is expected if the stellar mass distribution extends to $M_{\max} = 600 M_\odot$, but the expected number becomes significantly smaller if $M_{\max} = 300 M_\odot$. We may be able to distinguish the fiducial and $3σ$ models by the observed PISN rate. This will help us to constrain the origin of binary BHs and the reaction rate, although there remains degeneracy between $M_{\max}$ and the reaction rate. PISN ejecta mass estimates from light curves and spectra obtained by follow-up observations would be important to disentangle the degeneracy.
