The diffuse Galactic γ-ray emission, mainly produced via interactions between cosmic rays
and the interstellar medium and/or radiation field, is a very important probe of the …

We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the
surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of …

The recent detection of 12 γ-ray galactic sources well above E> 100 TeV by the LHAASO
observatory has been a breakthrough in the context of the search for the origin of cosmic …

The recent discovery of a new population of ultrahigh-energy gamma-ray sources with
spectra extending beyond 100 TeV revealed the presence of Galactic PeVatrons—cosmic …

We critically assess limits on the maximum energy of protons accelerated within
superbubbles around massive stellar clusters, considering a number of different scenarios …

The recent observations of photons with energies of a few 1014 eV from decaying neutral
pions, both from a direction coincident with a giant molecular cloud (HAWC J1825-134 …

In the Large High Altitude Air Shower Observatory (LHAASO), the square kilometer array,
with 5249 electromagnetic particle detectors (EDs) and 1188 muon detectors, is deployed to …

Context. Several new ultrahigh-energy (UHE) γ-ray sources have recently been discovered
by the Large High Altitude Air Shower Observatory (LHAASO) collaboration. These …

PeVatrons are the most powerful naturally occurring particle accelerators in the Universe.
The identification of counterparts associated to astrophysical objects such as dying massive …

We present a simple phenomenological model of hadronic interaction between protons
accelerated in an old supernova remnant (SNR) and cold protons situated within the …