论文标题
IA型超新星绝对峰值幅度的模型独立边界
Model independent bounds on Type Ia supernova absolute peak magnitude
论文作者
论文摘要
我们使用Pantheon样本对IA类型超新星观测值进行限制，即IA型超新星的$ M_B $，以及通过模型独立和非参数方法对哈勃参数进行cosmic Chronometers数据。我们的分析基于高斯过程回归。我们在峰值绝对幅度上找到百分比级别的百分比范围为$ m_b = -19.384 \ pm0.052 $。为了完整性并检查结果的一致性，我们还包括Baryon声学振荡数据以及Planck 2018 Cosmic Microwave背景观测值的Comving Sound Horizon的先验。包括这两个数据的包含对$ M_B $在次级级别上的限制更加严格。我们从$ M_B $的限制中从Pantheon类型的超新星观测和BARYON声学振荡观测值的组合中获得了约束，给出了$ M_B = -19.396 \ PM0.016 $。在使用这些观测值添加宇宙计时仪观察时，我们发现$ m_b = -19.395 \ pm0.015 $。所有这些数据的峰值绝对幅度的平均值彼此一致，并且值大约等于$ -19.4 $。
We put constraints on the peak absolute magnitude, $M_B$ of type Ia supernova using the Pantheon sample for type Ia supernova observations and the cosmic chronometers data for the Hubble parameter by a model independent and non-parametric approach. Our analysis is based on the Gaussian process regression. We find percent level bounds on the peak absolute magnitude given as $M_B=-19.384\pm0.052$. For completeness and to check the consistency of the results, we also include the Baryon acoustic oscillation data and the prior of the comoving sound horizon from Planck 2018 cosmic microwave background observations. The inclusion of these two data gives tighter constraints on $M_B$ at the sub-percent level. We obtain constraints on $M_B$ from the combination of pantheon compilation of type Ia supernova observations and baryon acoustic oscillation observations given as $M_B=-19.396\pm0.016$. When adding the cosmic chronometer observations with these observations, we find $M_B=-19.395\pm0.015$. The mean values of peak absolute magnitude from all these data are consistent with each other and the values are approximately equal to $-19.4$.
