Search for discrete gamma-ray sources emitting at energies greater than 10(exp15) eV.

Abstract

The data of the extensive air shower experiment at Kiel have been scanned systematically for possible discrete γ-ray sources in the energy range E > 10¹⁵ eV and in the declination band δ = 25° - 75°. Photon fluxes for celestial positions with the statistically most significant excesses of showers and 3 σ upper limit photon fluxes for COS B γ-ray sources visible to the extensive air shower experiment at Kiel are presented.