标题： 宇宙学和星系团聚及利用点质量校正模型的HSC Y3和SDSS的层析弱引力透镜源红移约束 显示英文标题

标题： Cosmology and Source Redshift Constraints from Galaxy Clustering and Tomographic Weak Lensing with HSC Y3 and SDSS using the Point-Mass Correction Model

摘要： 星系聚类和弱引力透镜的结合是检验宇宙学模型的强大探针。 我们使用SDSS数据作为暗物质（透镜样本）的示踪物，以及HSC Y3数据集作为源星系，对星系聚类和弱引力透镜宇宙学进行了联合分析。 该分析将HSC Y3星系分为四个天体分层区间，用于星系-星系透镜和宇宙剪切测量，并采用点质量校正模型，将星系-星系透镜信号利用到2$h^{-1}$Mpc，扩展到70$h^{-1}$Mpc。 这些策略提高了星系-星系透镜数据向量的信噪比。 使用平坦的$\Lambda$CDM模型，我们发现$S_8 = 0.780^{+0.029}_{-0.030}$，并且使用$w$CDM模型，我们得到$S_8 = 0.756^{+0.038}_{-0.036}$与$w = -1.176^{+0.310}_{-0.346}$。 我们在第三和第四天体分层区间的红移均值偏移参数上应用了无信息先验。 利用断层弱透镜的自校准能力，我们测量了$\Delta z_3 = -0.112^{+0.046}_{-0.049}$和$\Delta z_4 = -0.185^{+0.071}_{-0.081}$，与之前HSC Y3的结果一致。 这表明弱透镜自校准可以实现与其它方法（如光度和聚类红移校准）相当的红移约束。 显示英文摘要

摘要： The combination of galaxy clustering and weak lensing is a powerful probe of the cosmology model. We present a joint analysis of galaxy clustering and weak lensing cosmology using SDSS data as the tracer of dark matter (lens sample) and the HSC Y3 dataset as source galaxies. The analysis divides HSC Y3 galaxies into four tomographic bins for both galaxy-galaxy lensing and cosmic shear measurements, and employs a point-mass correction model to utilize galaxy-galaxy lensing signals down to 2$h^{-1}$Mpc, extending up to 70$h^{-1}$Mpc. These strategies enhance the signal-to-noise ratio of the galaxy-galaxy lensing data vector. Using a flat $\Lambda$CDM model, we find $S_8 = 0.780^{+0.029}_{-0.030}$, and using a $w$CDM model, we obtain $S_8 = 0.756^{+0.038}_{-0.036}$ with $w = -1.176^{+0.310}_{-0.346}$. We apply uninformative priors on the redshift mean-shift parameters for the third and fourth tomographic bins. Leveraging the self-calibration power of tomographic weak lensing, we measure $\Delta z_3 = -0.112^{+0.046}_{-0.049}$ and $\Delta z_4 = -0.185^{+0.071}_{-0.081}$, in agreement with previous HSC Y3 results. This demonstrates that weak lensing self-calibration can achieve redshift constraints comparable to other methods such as photometric and clustering redshift calibration.