论文标题
进行运动学Sunyaev-Zel'Dovich效应的测量：包括通过前向建模的速度重建的不确定性
Taking measurements of the kinematic Sunyaev-Zel'dovich effect forward: including uncertainties from velocity reconstruction with forward modeling
论文作者
论文摘要
我们在宇宙微波背景（CMB）的Planck Smica地图上测量了由MaxBCG簇印记的运动学Sunyaev-Zel'Dovich（KSZ）效应。我们的测量首次直接解释了速度重建中的不确定性，整个贝叶斯前向建模过程。我们表明，这种经常被忽略的不确定性预算通常会在群集量表下将测得的KSZ信号振幅上的最终不确定性增加$ \ simeq15 \％$。我们观察到KSZ效应的证据，其重要性为$ \simeq2σ$。我们的分析应用于将来的高分辨率CMB数据，以及在地图过滤和信号调制方法方面的略有改进，应产生KSZ信号的显着和无偏测量，然后可以用来探测和约束银河系簇和星系组的Baryonic含量。
We measure the kinematic Sunyaev-Zel'dovich (kSZ) effect, imprinted by maxBCG clusters, on the Planck SMICA map of the Cosmic Microwave Background (CMB). Our measurement, for the first time, directly accounts for uncertainties in the velocity reconstruction step through the process of Bayesian forward modeling. We show that this often neglected uncertainty budget typically increases the final uncertainty on the measured kSZ signal amplitude by $\simeq15\%$ at cluster scale. We observe evidence for the kSZ effect, at a significance of $\simeq2σ$. Our analysis, when applied to future higher-resolution CMB data, together with minor improvements in map-filtering and signal-modeling methods, should yield both significant and unbiased measurements of the kSZ signal, which can then be used to probe and constrain baryonic content of galaxy clusters and galaxy groups.
