Fractality high energy cosmic rays

N. J. Martinic, Rolando Ticona Peralta, I. Poma, F. Osco, R. Gutiérrez

Research output: Contribution to journalArticlepeer-review


Using EAS data from the EAS-EXC group (EAS plus hadronic calorimeter and nuclear emulsion-X chamber hybrid experiment) on Mount Chacaltaya during the 1990's the fractal properties of the energetic cosmic ray fluxes was investigated. A discrimination in the hadron content of the energetic primaries furnishes two different data samples, the total EAS fluxes and the hadron-less fluxes. The sidereal diurnal variation of the hadron-less EAS time variation shows values of 0.5% with a phase at about 2.29 hr sidereal time. With the help of the Grassberger-Procaccia algorithm the fractal dimensions have been investigated of, on the one hand, the differences in arrival times of the hadron-less showers and on the other hand the EAS fluxes time series with an integration time of five min. The obtained fractal dimensions show inconclusive evidence of continuous chaotic component in the data samples investigated.

Original languageEnglish
Pages (from-to)313-316
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
StatePublished - Jul 2003


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