The study of nonlinear phenomena observed in the arrival time series of cosmic rays

据报道，宇宙射线群的存在，其到达时间分布具有混沌特性。为了证实这种现象的存在，我们用更严格的能量准则和更合适的非线性方法对高频空气簇射数据进行了分析，结果发现没有发现混沌现象，所有的宇宙线序列似乎都是随机的，除了少数候选的具有分形行为的序列外。但是，这一结论仅依赖于用单个空气簇射阵列观测到的数据，并不是没有分析方法的。我们的新实验，两个分离的同时观测宇宙线的空气簇射阵列，将找到这样一组具有非线性特征的宇宙线的明确证据。

The existence of groups of cosmic rays, whose arrival time distribution shows chaotic character, has been reported. To confirm the existence of such phenomena ,we analyzed high frequency air shower data with more rigorous energy criterion and more suitable non-linear method As the result, we could not find the chaotic ones and all sequences of cosmic rays seems to be random ones ,except few candidates with fractal behavior. But, this conclusion depends only on data observed with a single air shower array, and is not free from analytical methods. Our new experiment, two separated air shower arrays which observe cosmic rays at the same time, will find the clear evidence of such group of cosmic rays with non-linear characters.