Giant air showers: The problem of events with E 0≥1020 eV

Abstract

The problem of the “upper edge” of the energy spectrum of giant air showers (GASs) with E0≥1019 eV is considered. The almost complete absence of GASs with the highest energies (E0≥1020 eV) at the Yakutsk array and their considerable number at AGASA are discussed in view of the fact that both arrays have similar basic detectors and similar procedures of data processing are being used.