Searches for Ultra-High-Energy Photons at the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION; D. MELO

Universe

MDPI Open Access Journals

Lugar: Basel; Año: 2022

2218-1997

The Pierre Auger Observatory, which is the largest air-shower experiment in the world, offers unprecedented exposure to neutral particles at the highest energies. Since the start of data collection more than 18 years ago, various searches for ultra-high-energy (UHE, E >= 10**17 eV) photons have been performed, either for a diffuse flux of UHE photons, for point sources of UHE photons or for UHE photons associated with transient events such as gravitational wave events. In the present paper, we summarize these searches and review the current results obtained using the wealth of data collected by the Pierre Auger Observatory.