The exploration of the universe has recently entered a new era thanks to the multi-
messenger paradigm, characterized by a continuous increase in the quantity and quality of …

Radio observations prove the existence of relativistic particles and magnetic field associated
with the intra-cluster-medium (ICM) through the presence of extended synchrotron emission …

The authors define “ultrahigh-energy cosmic rays”(UHECRs) as those cosmic rays with
energies above 10 18 eV. It had been anticipated that there would be a cutoff in the energy …

The origin of the highest energy cosmic rays is still unknown. The discovery of their sources
is expected to reveal the workings of the most energetic astrophysical accelerators in the …

We consider the acceleration of charged particles near ultrarelativistic shocks, with Lorentz
factor. We present simulations of the acceleration process and compare these with results …

We present evidence for the existence of shock waves caused by the formation of the large-
scale structure. In some clusters of galaxies peripherally located sources of extended diffuse …

We study the properties of cosmological shock waves identified in high-resolution, N-
body/hydrodynamic simulations of a Λ CDM universe and their role on thermalization of gas …

We obtain the maximum diffuse neutrino intensity predicted by hadronic photoproduction
models of the type which have been applied to the jets of active galactic nuclei or gamma …

Data collected by the Pierre Auger Observatory provide evidence for anisotropy in the arrival
directions of the cosmic rays with the highest-energies, which are correlated with the …

The origin of ultrahigh-energy cosmic rays (UHECRs) is a half-century-old enigma. The
mystery has been deepened by an intriguing coincidence: over ten orders of magnitude in …