论文标题
在宇宙黎明重建大尺度
Reconstructing large scales at cosmic dawn
论文作者
论文摘要
宇宙微波背景（CMB）在电离时期充当大规模结构的背光，在该时期，汤姆森散射从动力学Sunyev sunyaev Zel'Dovich（KSZ）效应的小角度尺度上引起温度各向异性。在本文中，我们证明，基于CMB温度与21cm调查之间的跨相关性，KSZ断层扫描的技术（速度重建）可以显着改善对不合理的重新离子化模型的约束，并提供有关由21cm测量本身表征的大规模模式的信息，这些模式由于前面的测量本身而表征不佳。
The cosmic microwave background (CMB) serves as a backlight to large-scale structure during the epoch of reionization, where Thomson scattering gives rise to temperature anisotropies on small angular scales from the kinetic Sunyaev Zel'dovich (kSZ) effect. In this paper, we demonstrate that the technique of kSZ tomography (velocity reconstruction), based on cross correlations between CMB temperature and 21cm surveys, can significantly improve constraints on models of inhomogeneous reionization and provide information about large-scale modes that are poorly characterized by 21cm measurements themselves due to foreground contamination.
