We review open questions and prospects for progress in ultrahigh-energy cosmic ray
(UHECR) research, based on a series of discussions that took place during the “The High …

In this report we review the important progress made in recent years towards understanding
the experimental data on ultra-high-energy (E≳ 1 0 9 GeV) cosmic rays. We begin with a …

Neutrinos with energies above 1017 eV are detectable with the Surface Detector Array of the
Pierre Auger Observatory. The identification is efficiently performed for neutrinos of all …

The interaction of ultra-high-energy cosmic rays (UHECRs) with pervasive photon fields
generates associated cosmogenic fluxes of neutrinos and photons due to photohadronic …

We study the implications of ultrahigh-energy cosmic-ray (UHECR) data from the Pierre
Auger Observatory for potential accelerator candidates and cosmogenic neutrino fluxes for …

Cosmogenic neutrinos are produced when ultrahigh-energy cosmic rays (UHECRs) interact
with cosmological photon fields. Limits on the diffuse flux of these neutrinos can be used to …

We review progress in high-energy cosmic ray physics focusing on recent experimental
results and models developed for their interpretation. Emphasis is put on the propagation of …

We use a multimessenger approach to constrain realistic mixed composition models of
ultrahigh energy cosmic ray sources using the latest cosmic ray, neutrino, and gamma-ray …

We demonstrate that the ultra-high-energy cosmic rays (UHECRs) produced in the nuclear
cascade in the jets of low-luminosity gamma-ray bursts (LL-GRBs) can describe the UHECR …

The determination of the primary energy of extensive air showers using the fluorescence
detection technique requires an estimation of the energy carried away by particles that do …