کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1771113 | 1020726 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Principal components analysis of Cerenkov photon distributions from extensive air showers applied to GeV gamma-proton discrimination
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Principal components analysis of Cerenkov photon distributions from extensive air showers applied to GeV gamma-proton discrimination Principal components analysis of Cerenkov photon distributions from extensive air showers applied to GeV gamma-proton discrimination](/preview/png/1771113.png)
چکیده انگلیسی
High-energy interactions of cosmic rays with Earth atmosphere and the resulting extensive air showers have been simulated by means of the CORSIKA Monte Carlo code. Statistical fluctuations of the two-dimensional secondary Cerenkov photon density distributions at ground level produced by GeV cosmic γ rays and protons are studied by means of principal components analysis (PCA). This provides a decreasing sequence of covariance matrix eigenvalues that may be fitted to an analytical expression allowing to distinguish among different primary cosmic rays. A very efficient discrimination method of gamma ray induced showers from proton simulated extensive air showers is proposed as a result of this analysis. A cutting parameter is calculated, and the efficiency of the cutting procedure for γ-proton separation is evaluated under experimental conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Astroparticle Physics - Volume 26, Issue 1, August 2006, Pages 50-57
Journal: Astroparticle Physics - Volume 26, Issue 1, August 2006, Pages 50-57
نویسندگان
J.L. Contreras, E. Faleiro, J.M.G. Gómez, R.A. Molina, L. Muñoz, A. Relaño, J. Retamosa,