Energy Estimation Of Ultra-High Energy Cosmic Ray Photons By Monte Carlo Simulations Of Extensive Air Showers

Ultra-High Energy Cosmic Rays (UHECR) (E >= 5 x 10(19) eV) are detected through Extensive Air Showers that are created when a primary cosmic ray particle interacts with the atmosphere of the Earth. The energy of the primary particle can be estimated experimentally based on simulations. In this paper, we attempt to estimate the energy of UHECR gamma ray photons by applying a Monte Carlo simulation code and we compare the results with the ones derived in our previous papers for hadron initiated showers. The scenario of simulations is adapted to the P. Auger Observatory site.