… A search for ultra-high energy photons with energies above 1 EeV is performed using
nine years of data collected by the Pierre Auger Observatory in hybrid operation mode. An …

… a search for photons at energies above 1 EeV using the Auger … the fluorescence detector of
the Pierre Auger Observatory in a … a search for EeV photons using the full hybrid data sample …

… of UHECRs is gradually getting heavier above 1018.3 … search for UHE photons above
1019 eV using the surface … It is designed as a hybrid cosmic-ray detector using two proven …

… No photons with energies above 1 EeV (1018 eV) have been definitively identified so far, …
by the Pierre Auger Collaboration in previous work, each one optimizing the energy range …

… After the event selection, 8178 events remain for the analysis with energies above 1018
eV. The reference energy used here is the photon energy Eγ, ie the calorimetric energy …

… to lower energy, the hybrid energy spectrum above 1018 eV is … The current status of these
searches with very different … measurements of the fluorescence light produced by extensive air …

… the search for EeV photons with hybrid events by:(i) combining observables of the fluores-
cence detector and the surface array for a better photon… to 1018 eV. The derived limits on the …

… to search for photons in the ultra-high energy cosmic ray beam. Photons above 6 × 1018
eV can be created if the highest energy cosmic rays are dominated by light nuclei (such as …

… energies of 1, 2, 3, 5 and 10EeV. The correct values for the upper limits on the integral
photon … derived are 0.14%, 0.17%, 0.42%, 0.86% and 2.9% for the same threshold energies. …

… In this context the Pierre Auger Observatory (PAO) has been … cosmic rays at energies above
1018 eV in their interaction … the most advanced detection techniques in a hybrid solution, …