论文标题
宇宙中午的中微子：探测宇宙之星形成史的探测
Neutrinos from the cosmic noon: a probe of the cosmic star formation history
论文作者
论文摘要
宇宙恒星形成历史的多个天体物理探针在红移z> 1时产生了该速率的明显不同。而所有探针似乎表明峰值星形形成的时期称为宇宙中午1.5 <z <z <3之间，这些探针的详细推论是分歧。特别地，与用UV/IR数据指示的峰值相比，H-Alpha数据指示的峰值形成速率密度的大小高约4。在这项工作中，我们探讨了在Hyper-Kamiokande（HK）实验中弥漫性超新星中微子背景的未来测量的潜力，以解决差异并帮助固定峰宇宙星形形成率的幅度。我们发现，取决于宇宙核心偏曲超新星中微子光谱，HK质量载有0.1％gadolinium的HK可能会区分不同恒星形成历史，其数据收集在1.6 - 20年之间。
Multiple astrophysical probes of the cosmic star formation history yield widely different inferences of this rate at redshifts z > 1. While all probes seem to indicate a period of peak star formation known as the cosmic noon between 1.5 < z < 3, the detailed inferences from these probes are in disagreement. In particular, the magnitude of the peak star formation rate density indicated by H-alpha data is higher by a factor of ~ 4 compared to the magnitude of the peak indicated by UV/IR data. In this work, we explore the potential of future measurements of the diffuse supernova neutrino background at the Hyper-Kamiokande (HK) experiment to resolve the discrepancy and help pin down the magnitude of the peak cosmic star formation rate. We find that, depending upon the cosmic core-collapse supernova neutrino spectrum, HK loaded with 0.1% Gadolinium by mass has the potential to discriminate between the different star formation histories with between 1.6-20 years of data collection.
