论文标题
测试宇宙距离双重关系的距离差异一致性和独立模型的方法
A Distance-Deviation Consistency and Model-Independent Method to Test the Cosmic Distance-Duality Relation
论文作者
论文摘要
提供了测试宇宙距离二元关系（CDDR）的距离差异一致性和模型无关的方法。该方法值得关注两个方面：首先，使用距离差异一致性方法来配对子样本：而不是将小移偏差的子样本配对小于\ textbf {value}，例如$ \ welet \ welet \vertΔz\ right \ right \ right \ vert <0.005 $。子样品之间的红移偏差随红移而减小，以确保距离偏差保持不变。该方法在高红移时选择更多子样本，最多$ z = 2.16 $，并提供120个子样本对。其次，与模型无关的方法涉及$ 1048 $ IA类型超新星（SNE IA）和205美元的$ 205 $强力引力透镜系统（SGLS）的最新数据集，用于获得亮度距离$ d_l $和Angular Dimular Dimator demant demumety demume $ d_a $。借助模型无关的方法，CDDR的参数，SNE IA光曲线和SGL同时拟合。 \ textbf {结果显示} $η= 0.047^{+ 0.190} _ { - 0.151} $，CDDR的验证为1 $σ$置信度的$ \ frac {d_l} {d_a} {d_a} {d_a} {d_a} {（1+ z）{（1+ Z）
A distance-deviation consistency and model-independent method to test the cosmic distance duality relation (CDDR) is provided. The method is worth attention on two aspects: firstly, a distance-deviation consistency method is used to pair subsamples: instead of pairing subsamples with redshift deviation smaller than a \textbf{value}, say $\left\vert Δz\right\vert <0.005$. The redshift deviation between subsamples decreases with the redshift to ensure the distance deviation stays the same. The method selects more subsamples at high redshift, up to $z=2.16$, and provides 120 subsample pairs. Secondly, the model-independent method involves the latest data set of $1048$ type Ia supernovae (SNe Ia) and $205$ strong gravitational lensing systems (SGLS), which are used to obtain the luminosity distances $D_L$ and the ratio of angular diameter distance $D_A$ respectively. With the model-independent method, parameters of the CDDR, the SNe Ia light-curve, and the SGLS are fitted simultaneously. \textbf{The result shows} that $η= 0.047^{+0.190}_{-0.151}$ and CDDR is validated at 1$σ$ confidence level for the form $\frac{D_L}{D_A}{(1 + z)^{ - 2}} =1+ ηz$.
