The intensity of cosmic rays with energies above∼ 1014 eV is only a few particles per
square meter per day and thus too low to allow for direct measurement with satisfactory …

The Pierre Auger Observatory is a facility built to detect air showers produced by cosmic rays
above 10^ 17 eV. During clear nights with a low illuminated moon fraction, the UV …

We describe the method devised to reconstruct inclined cosmic-ray air showers with zenith
angles greater than $60^\circ $ detected with the surface array of the Pierre Auger …

The surface detector array of the Pierre Auger Observatory consists of 1600 water-
Cherenkov detectors, for the study of extensive air showers (EAS) generated by ultra-high …

Over a century after their discovery, the measurement of the energy spectrum of ultra-high
energy cosmic rays (UHECRs) remains as one of the main issues within the field, being …

The Pierre Auger Observatory [1] is a hybrid detector for the observation of cosmic rays
above~ 1018 eV. The atmosphere of the Earth is used as a calorimeter measuring the …

The Pierre Auger Observatory is a detector for ultra-high energy cosmic rays. It consists of a
surface array to measure secondary particles at ground level and a fluorescence detector to …

A method is developed to search for air showers initiated by photons using data recorded by
the surface detector of the Auger Observatory. The approach is based on observables …

The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It
combines a surface array to measure secondary particles at ground level together with a …

The longitudinal profile of extensive air showers is sensitive to the energy and type/mass of
the primary particle. One of its characteristics, the atmospheric depth of shower maximum, is …