期刊信息
- 刊名： 河北师范大学学报（自然科学版）Journal of Hebei Normal University (Natural Science)
- 主办： 河北师范大学
- ISSN： 1000-5854
- CN： 13-1061/N
- 中国科技核心期刊
- 中国期刊方阵入选期刊
- 中国高校优秀科技期刊
- 华北优秀期刊
- 河北省优秀科技期刊
宇宙线大尺度各向异性的分析方法
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1. 西藏大学宇宙线教育部重点实验室, 西藏 拉萨850000;
2. 西藏大学理学院物理系, 西藏 拉萨850000;
3. 河北师范大学物理科学与信息工程学院, 河北 石家庄050024 -
DOI：
Analysis Method Based on Large-scale Anisotropy of Cosmic Ray
摘要/Abstract
模拟研究了2种基于等天顶角方法的全天区扫描方法.一种是已经应用于全天区搜寻γ源的传统普通等天顶角方法,一种是基于等天顶角方法的χ2拟合方法.从模拟结果看,二者之间存在着不可忽视的差异,前一种方法在分析存在大尺度各向异性的宇宙线样本时不能正确反映各向异性的真实现象,而后一种方法分析结果能够正确反映真实物理现象,但是由于受到构造χ2方程的限制使得分析全天区宇宙线分布时在时间尺度上受到限制(视实验探测器数据统计量大小而定).最后,对比了这2种方法各自的优缺点.
Describes two methods for analyzing wide sky survey based on Equi-Zenith angle method.One is the traditional Equi-Zenith angle method which has been applied to survey γ source during wide sky survey,and the other is χ2-iteration method based on Equi-Zenith angle method.The analysis results derived from different data samples by these two methods are nonneligibly diffrente.The former can not reflect the real phnomena in case of analyzing large scale anistropy while the latter can do.Howerer the latter restricts the analysis time scale caused by the limit coming from χ2 function.Finally,the advantages and disadvantages of each of these two methods were discussed.