Towards Searching for Photons with Energies beyond the PeV Range from Galactic PeVatrons

Marcus Niechciol, Chiara Papior, Markus Risse

Several gamma-ray observatories have discovered photons of cosmic origin with energies in the PeV ($10^{15}\text{eV}$) range. Photons at these energies might be produced as by-pr…