Scientific Highlights

The energy spectrum and mass composition data from the Pierre Auger Observatory constrain the source properties.

The latest data of the Pierre Auger Observatory constrains scenarios of super-heavy particle relics.

In a recent review article current searches for ultra-high-energy (UHE) photons at the Pierre Auger Observatory were summarized.

This looks like the most natural question regarding ultra-high energy cosmic rays, but it’s also one of the hardest ones to be answered.

The possibility of some level of Lorentz invariance violation at very-high energies has been proposed in the context of theories beyond the Standard Model, quantum gravity and string theory.

Recently, the Pierre Auger collaboration presented a measurement of the cosmic ray spectrum near the feature known as the "second knee".