论文标题
宇宙字符串的信号在21厘米红移和CMB极化图的互相关中
Signal of Cosmic Strings in Cross-Correlation of 21-cm Redshift and CMB Polarization Maps
论文作者
论文摘要
我们研究在21厘米红移和B模式CMB极化图的互相关信号中，宇宙弦唤醒的信号。位置空间互相关图中字符串的特定非高斯信号可以通过匹配的滤波分析提取。当嵌入Planck Best-Fit LCDM模型的高斯波动背景中时，可以识别出张力的信号略低于与当前上限相对应的信号。
We study the signal of cosmic string wakes present before the time of reionization in the cross-correlation signal of 21-cm redshift and B-mode CMB polarization maps. The specific non-Gaussian signal of strings in the position space cross-correlation maps can be extracted by means of a matched filtering analysis. Signals of strings with tension somewhat lower than those corresponding to the current upper bound can be identified when embedded in a background of Gaussian fluctuations from a Planck best-fit LCDM model.
