Pulsars are factories of relativistic electrons and positrons that propagate away from the
pulsar, eventually permeating our Galaxy. The acceleration and propagation of these cosmic …

We present the first catalog of gamma-ray sources emitting above 56 and 100 TeV with data
from the High Altitude Water Cherenkov Observatory, a wide field-of-view observatory …

Abstract Very high energy\(\gamma\)-rays are one of the most important messengers of the
relativistic non-thermal Universe. The major motivation of very high energy\(\gamma\)-ray …

Context. Young massive stellar clusters are extreme environments and potentially provide
the means for efficient particle acceleration. Indeed, they are increasingly considered as …

The discovery of extended TeV emission around the Geminga and PSR B0656+ 14 pulsars,
with properties consistent with free particle propagation in the interstellar medium (ISM), has …

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 …

Milagro and the High Altitude Water Cherenkov (HAWC) observatory have detected
extended TeV gamma-ray emission around nearby pulsar wind nebulae. Building on these …

Aims. The identification of PeVatrons, hadronic particle accelerators reaching the knee of the
cosmic ray spectrum (few× 10 15 eV), is crucial to understand the origin of cosmic rays in the …

The Earth is bombarded by ultrarelativistic particles, known as cosmic rays (CRs). CRs with
energies up to a few PeV (= 10 15 eV), the knee in the particle spectrum, are believed to …

The highest-energy known gamma-ray sources are all located within 0 fdg 5 of extremely
powerful pulsars. This raises the question of whether ultra-high-energy (UHE;> 56 TeV) …