论文标题
针对电离时期的前景强度映射分析
Robust Intensity Mapping Analysis against Foregrounds for the Epoch of Reionization
论文作者
论文摘要
HI 21 cm线和CO 2.61 mm线的强度映射从电离时期出现为强大的，互补的，高红移宇宙的探针。但是，地图及其互相关都以前景为主。我们提出了一个新的分析，通过该分析，信号是由前景公正的，即可以在没有前景缓解的情况下对其进行测量。我们构建了HI-CO互相关的反对称部分，因为两个场的统计波动的时间在时间上不同。我们表明，这种新信号的迹象可以独立地区分模型，而内而外是否发生在某个时间间隔内。
Intensity mapping of the HI 21 cm line and the CO 2.61 mm line from the epoch of reionization has emerged as powerful, complementary, probes of the high-redshift Universe. However, both maps and their cross-correlation are dominated by foregrounds. We propose a new analysis by which the signal is unbiased by foregrounds, i.e. it can be measured without foreground mitigation. We construct the antisymmetric part of the HI-CO cross-correlation, arising because the statistical fluctuations of two fields have different evolution in time. We show that the sign of this new signal can distinguish model-independently whether inside-out reionization happens during some interval of time.
