1 The Energy Spectrum of Cosmic Rays Above 3 × 10 17 eV as measured with the Haverah Park Array
نویسندگان
چکیده
Air showers recorded by the Haverah Park Array during the years 1974-1987 have been re-analysed. For the original estimate of the energy spectrum, a relationship between the ground parameter ρ(600) and the primary energy, as determined by Hillas in the 1970s, was used. Here we describe the energy spectrum obtained using the QGSJET98 interaction model in the CORSIKA Monte Carlo code, together with GEANT to simulate the detailed detector response to ground particles. A new energy spectrum in the range 3 × 10 17 eV to 4 × 10 18 eV is presented.
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The energy spectra of ultra high energy cosmic rays reported by the AGASA, Fly’s Eye, Haverah Park, HiRes, and Yakutsk experiments are all shown to be in agreement with each other for energies below 10 eV (after small adjustments, within the known uncertainties, of the absolute energy scales). The data from HiRes, Fly’s Eye, and Yakutsk are consistent with the expected flux suppression above 5 ...
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