Cosmic-ray composition with TACTIC telescope using Fractal and Wavelet analysis

A preliminary flux estimate of various cosmic-ray constituents based on the atmospheric Cerenkov light flux of extensive air showers using fractal and wavelet analysis approach is proposed. Using a Monte-Carlo simulated database of Cerenkov images recorded by the TACTIC telescope, we show that one of the wavelet parameters (wavelet dimension B6B6) provides ⩾90% segregation of the simulated events in terms of the primary mass. We use these results to get a preliminary estimate of primary flux for various cosmic-ray primaries above 5 TeV energy. The simulation based flux estimates of the primary mass as recorded by the TACTIC telescope are in good agreement with the experimentally determined values.

► A preliminary flux estimate of various cosmic-ray constituents using Fractal and Wavelet analysis.
► Wavelet parameter B6 Provides ⩾90% segregation of the events in terms of their mass.
► Primary flux of various cosmic-primaries (Y, P, Ne & Fe) beyond 5 TeV energy estimated.