INVESTIGADORES
MELO Diego Gabriel
artículos
Título:
A Search for Photons with Energies Above 2×10**17 eV Using Hybrid Data from the LowEnergy Extensions of the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION; D. MELO
Revista:
ASTROPHYSICAL JOURNAL
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2022
ISSN:
0004-637X
Resumen:
Ultra-high-energy photons with energies exceeding 10**17 eV offer a wealth of connections to different aspects of cosmic-ray astrophysics as well as to gamma-ray and neutrino astronomy. The recent observations of photons with energies in the 10**15 eV range further motivate searches for even higher-energy photons. In this paper, we present a search for photons with energies exceeding 2 x 10**17 eV using about 5.5 yr of hybrid data from the low-energy extensions of the Pierre Auger Observatory. The upper limits on the integral photon flux derived here are the most stringent ones to date in the energy region between 10**17 and 10**18 eV.
