Cosmic rays (protons and other atomic nuclei) are believed to gain energies of
petaelectronvolts (PeV) and beyond at astrophysical particle accelerators called 'PeVatrons' …

Pulsar halos are extended gamma-ray structures generated by electrons and positrons
escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources …

Recently, the gamma-ray telescopes AGILE and Fermi observed several middle-aged
supernova remnants (SNRs) interacting with molecular clouds. It is likely that their gamma …

Observations of the γ-ray emission around star clusters, isolated supernova remnants, and
pulsar wind nebulae indicate that the cosmic-ray (CR) diffusion coefficient near acceleration …

We present the detection of very-high-energy gamma-ray emission above 100 TeV from
HAWC J2227+ 610 with the High-Altitude Water Cherenov Gamma-Ray Observatory …

Observations of the Milky Way at TeV–PeV energies reveal a bright diffuse flux of hadronic
cosmic rays and also bright point sources of gamma rays. If the gamma-ray sources are …

Context. The spectrum of cosmic rays (CRs) is affected by their escape from an acceleration
site. This may be observed not only in the gamma-ray spectrum of young supernova …

We consider the high-energy astrophysics of the inner∼ 200 pc of the Galaxy. Our
modelling of this region shows that the supernovae exploding here every few thousand …

We report the detection of γ-ray emission coincident with four supernova remnants (SNRs)
using data from the Large Area Telescope on board the Fermi Gamma-ray Space …

Interactions of ultra-high energy cosmic rays (UHECRs) accelerated in specific astrophysical
environments have been shown to shape the energy production rate of nuclei differently …