论文标题
高能中微子和大规模结构示踪剂的互相关研究
A Cross-Correlation Study of High-energy Neutrinos and Tracers of Large-Scale Structure
论文作者
论文摘要
Icecube天文台检测到的大部分天体中微子的起源仍然是一个谜。以前的源调查分析比较了冰卵石事件和天体物理目录中各个来源的方向。当源候选者的数量大于观察到的天体中微子的数量时，源协会方法在技术上具有挑战性。我们表明，在这种庞大的来源数字中，可以使用对中微子数据和源目录的互相关分析来限制高能天体中性中微子的潜在源人群，并为存在天体物理中微子的存在提供空间证据。我们介绍了ICECUBE 2010-2012点源数据和Wise-2 Mass Galaxy样本的互相关的分析。虽然我们发现与公开可用的中微子数据集没有显着检测到互相关的显着检测，但我们表明，当应用于完整的IceCube数据时，该数据具有较长的观察时间和较高的天体物理中微子纯度，我们的方法具有足够的统计能力，可以检测到跨性别的信号，如果中子会追踪全球范围大型结构。
The origin of the bulk of the astrophysical neutrinos detected by the IceCube Observatory remains a mystery. Previous source-finding analyses compare the directions of IceCube events and individual sources in astrophysical catalogs. The source association method is technically challenging when the number of source candidates is much larger than the number of the observed astrophysical neutrinos. We show that in this large source number regime, a cross-correlation analysis of neutrino data and source catalog can instead be used to constrain potential source populations for the high-energy astrophysical neutrinos, and provide spatial evidence for the existence of astrophysical neutrinos. We present an analysis of the cross-correlation of the IceCube 2010-2012 point-source data and a WISE-2MASS galaxy sample. While we find no significant detection of cross-correlation with the publicly available neutrino dataset, we show that, when applied to the full IceCube data, which has a longer observation time and higher astrophysical neutrino purity, our method has sufficient statistical power to detect a cross-correlation signal if the neutrino sources trace the Large Scale Structure of the Universe.
