Cosmic rays with energies above 10¹⁹ eV, observed in 1999–2004 by the High Resolution Fly’s Eye (HiRes) experiment in the stereoscopic mode, were found to correlate with directions to distant BL Lac type objects (BL Lacs), suggesting non-standard neutral particles travelling for cosmological distances without attenuation. This effect could not be tested by newer experiments because of their inferior angular resolution. The distribution in the sky of BL Lacs associated with cosmic rays was found to deviate from isotropy, which might give a clue to the interpretation of the observed anomaly. However, previous studies made use of a sample of BL Lacs which was anisotropic by itself, thus complicating these interpretations. Here, we use a recently compiled isotropic complete sample of BL Lacs and the same HiRes data to confirm the presence of correlations and to strengthen the case for the local large-scale structure pattern in the distribution of the correlated events in the sky. Further tests of the anomaly await new precise cosmic-ray data

1999 年至 2004 年通过高分辨率复眼 (HiRes) 实验在立体模式下观察到的能量高于 10 ¹⁹ eV的宇宙射线被发现与遥远的 BL Lac 型天体 (BL Lacs) 的方向相关，表明存在非标准中性粒子在没有衰减的情况下传播宇宙距离。由于较新的实验的角分辨率较差，因此无法测试这种效应。与宇宙射线相关的 BL Lacs 在天空中的分布被发现偏离各向同性，这可能为解释观测到的异常现象提供线索。然而，之前的研究使用了本身各向异性的 BL Lacs 样本，从而使这些解释变得复杂。在这里，我们使用最近编译的 BL Lacs 各向同性完整样本和相同的 HiRes 数据来确认相关性的存在，并加强天空中相关事件分布中局部大尺度结构模式的情况。对异常现象的进一步测试等待新的精确宇宙射线数据