Dark matter particles could be superheavy, provided their lifetime is much longer than the
age of the Universe. Using the sensitivity of the Pierre Auger Observatory to ultrahigh energy …

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 …

Abstract The Pierre Auger Observatory has been detecting ultra-high energy cosmic rays
(UHECRs) for more than fifteen years. An essential feature of the Observatory is its hybrid …

We briefly discuss the connection of the Pierre Auger Observatory data with a large class of
dark matter models based on the early universe generation of super heavy particles, their …

Instantons, which are nonperturbative solutions to Yang-Mills equations, provide a signal for
the occurrence of quantum tunneling between distinct classes of vacua. They can give rise …

This proceeding summarizes the talk given at the opening of the UHECR 2022 conference
in L'Aquila on the whitepaper 'Ultra-High-Energy Cosmic Rays: The Intersection of the …

This study comprehensively investigates the gamma-ray dim population of Fanaroff-Riley
Type 0 (FR0) radio galaxies as potentially significant sources of ultra-high-energy cosmic …

The Global Cosmic-ray Observatory (GCOS) is a proposed large-scale observatory for
studying ultra-high-energy cosmic particles, including ultra-high-energy cosmic rays …

The combination of data from observatories measuring ultra-high energy cosmic rays,
photons, neutrinos and gravitational waves has provided new insights into the most extreme …

In the era of multi-messenger astronomy, ultra-high energy cosmic rays offer the unique
opportunity to investigate the nature of astrophysical sources and of particle interactions in …