标题： 使用最大似然比检验搜索高于10^19 eV的超高能宇宙射线点源 显示英文标题

标题： Search for Point Sources of Ultra--High-Energy Cosmic Rays Above 10^19 eV Using a Maximum Likelihood Ratio Test

摘要： 我们展示了在HiRes立体数据集中对高于10^19 eV宇宙射线点源的搜索结果。 该分析基于最大似然比检验，使用每个事件的概率密度函数，而不是要求预先选择固定的角分辨率大小。 该搜索扩展到HiRes数据集高于10^19 eV和AGASA数据集高于4.0 10^19 eV的联合数据集。 在两种情况下，均未发现与点源一致的统计显著事件聚集。 显示英文摘要

摘要： We present the results of a search for cosmic ray point sources at energies above 10^19 eV in the HiRes stereo data set. The analysis is based on a maximum likelihood ratio test using the probability density function for each event rather than requiring an a priori choice of a fixed angular bin size. The search is extended to the combined data set of HiRes data above 10^19 eV and AGASA data above 4.0 10^19 eV. In both cases, no statistically significant clustering of events consistent with a point source is found.