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基于小波变换的1—10TeV宇宙线周期变化研究

刘珺 贾焕玉 黄庆

刘珺, 贾焕玉, 黄庆. 基于小波变换的1—10TeV宇宙线周期变化研究[J]. 原子核物理评论, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
引用本文: 刘珺, 贾焕玉, 黄庆. 基于小波变换的1—10TeV宇宙线周期变化研究[J]. 原子核物理评论, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
LIU Jun, JIA Huan-yu, HUANG Qing. Detection of Superimposed Periodic Variation of 1—10 TeV Cosmic Ray Using Wavelets[J]. Nuclear Physics Review, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
Citation: LIU Jun, JIA Huan-yu, HUANG Qing. Detection of Superimposed Periodic Variation of 1—10 TeV Cosmic Ray Using Wavelets[J]. Nuclear Physics Review, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038

基于小波变换的1—10TeV宇宙线周期变化研究

doi: 10.11804/NuclPhysRev.21.01.038

Detection of Superimposed Periodic Variation of 1—10 TeV Cosmic Ray Using Wavelets

  • 摘要: 利用小波变换, 结合折叠周期分析方法, 对羊八井宇宙线观测站Tibet AS γ阵列1998年4—6月的实验记录数据进行了周期分析, 发现 TeV和10 TeV宇宙线流强观测数据中包含0.5 和1 d周期变化, 其信噪比分别达到10和6. TeV宇宙线0.5 和1 d周期变化的最大变化幅度分别约为0.3%和0.5%, 10 TeV宇宙线约为0.4%和0.7%. We use the technique of wavelet analysis and epoch folding methods to search for the superimposed periodic signals of 1—10 TeV cosmic ray in the data obtained with Tibet Ⅱ/HD AS Array for April to June of 1998. Solar time semidiurnal and diurnal variations have been detected with about signalnoise ratio 10 and 6 for the 1 TeV and 10 TeV cosmic ray flux respectively. The semidiurnal variations are of an amplitude 0.3%, a phase 0.9 for 1 TeV cosmic ray and 0.4%, 0.9 for 10 TeV. The diurnal variations are of amplitude 0.5%, 0.7%, and phase 0.8 for 1 TeV and 10 TeV cosmic ray respectively.
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出版历程
  • 收稿日期:  1900-01-01
  • 修回日期:  1900-01-01
  • 刊出日期:  2004-03-20

基于小波变换的1—10TeV宇宙线周期变化研究

doi: 10.11804/NuclPhysRev.21.01.038

摘要: 利用小波变换, 结合折叠周期分析方法, 对羊八井宇宙线观测站Tibet AS γ阵列1998年4—6月的实验记录数据进行了周期分析, 发现 TeV和10 TeV宇宙线流强观测数据中包含0.5 和1 d周期变化, 其信噪比分别达到10和6. TeV宇宙线0.5 和1 d周期变化的最大变化幅度分别约为0.3%和0.5%, 10 TeV宇宙线约为0.4%和0.7%. We use the technique of wavelet analysis and epoch folding methods to search for the superimposed periodic signals of 1—10 TeV cosmic ray in the data obtained with Tibet Ⅱ/HD AS Array for April to June of 1998. Solar time semidiurnal and diurnal variations have been detected with about signalnoise ratio 10 and 6 for the 1 TeV and 10 TeV cosmic ray flux respectively. The semidiurnal variations are of an amplitude 0.3%, a phase 0.9 for 1 TeV cosmic ray and 0.4%, 0.9 for 10 TeV. The diurnal variations are of amplitude 0.5%, 0.7%, and phase 0.8 for 1 TeV and 10 TeV cosmic ray respectively.

English Abstract

刘珺, 贾焕玉, 黄庆. 基于小波变换的1—10TeV宇宙线周期变化研究[J]. 原子核物理评论, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
引用本文: 刘珺, 贾焕玉, 黄庆. 基于小波变换的1—10TeV宇宙线周期变化研究[J]. 原子核物理评论, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
LIU Jun, JIA Huan-yu, HUANG Qing. Detection of Superimposed Periodic Variation of 1—10 TeV Cosmic Ray Using Wavelets[J]. Nuclear Physics Review, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038
Citation: LIU Jun, JIA Huan-yu, HUANG Qing. Detection of Superimposed Periodic Variation of 1—10 TeV Cosmic Ray Using Wavelets[J]. Nuclear Physics Review, 2004, 21(1): 38-42. doi: 10.11804/NuclPhysRev.21.01.038

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