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PRINCIPAL COMPONENTS ANALYSIS OF EXTENSIVE AIR SHOWERS APPLIED TO THE IDENTIFICATION OF COSMIC TeV GAMMA-RAYS
| Content Provider | Semantic Scholar |
|---|---|
| Author | Faleiro, Eduardo Gómez, J. M. G. Munoz, Luc Relaño, Armando Retamosa, J. |
| Copyright Year | 2004 |
| Abstract | We apply a principal components analysis (PCA) to the secondary particle density distributions at ground level produced by cosmic -rays and protons. For this purpose, high-energy interactions of cosmic rays with Earth’s atmosphere and the resulting extensive air showers have been simulated bymeans of the CORSIKAMonte Carlo code. We show that a PCA of the two-dimensional particle density fluctuations provides a decreasing sequence of covariance matrix eigenvalues that have typical features of a polynomial law, which are different for different primary cosmic rays. This property is applied to the separation of electromagnetic showers from proton simulated extensive air showers, and it is proposed as a new discrimination method that can be used experimentally for -proton separation. A cutting parameter related to the polynomial behavior of the decreasing sequence of covariancematrix eigenvalues is calculated, and the efficiency of the cutting procedure for -proton separation is evaluated. Subject headings: cosmic rays — gamma rays: observations |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://eprints.ucm.es/27787/1/Relano48libre.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | COSMIC Experiment Gamma Rays Height above ground level Interaction Medical Subject Headings Polynomial Population Parameter Principal Component Analysis Protons Radiation Rajiformes Recombinant Interferon-gamma Safety showers |
| Content Type | Text |
| Resource Type | Article |
