论文标题
对第56届Rencontres de Moriond的2022年宇宙学会议的贡献：HERA 21cm功率频谱限制的电离约束
Contribution to the 2022 Cosmology session of the 56th Rencontres de Moriond: Reionization constraints from HERA 21cm power spectrum limits
论文作者
论文摘要
我介绍了HERA Collaboration等人出版的HERA无线电干涉仪的21cm功率谱上限的分析。 2022年。我们使用最近的限制来限制早期宇宙中IgM和星系的电源的限制。除了CMB（例如，早期星系生产）外，我特别关注无线电背景的可能性，这可能会导致更强的21cm信号，因此更容易约束。我显示了HERA观察可以对这些模型和IGM进行的限制，以及与无线电和X射线背景上的现有约束相比。
I present our analysis of the 21cm power spectrum upper limits from the HERA radio interferometer, published in HERA Collaboration et al. 2022. We use the recent limits to constrain reionization and the properties of the IGM and galaxies in the early universe. I focus in particular on the possibility of a radio background in addition to the CMB (e.g. produced by early galaxies) which can lead to a stronger 21cm signal and is thus easier to constrain. I show what limits the HERA observations can put on these models and the IGM, and how this compares to existing constraints on the radio and X-ray background.
