The search for Galactic pevatrons is now a well-identified key science project of all
instruments operating in the very-high-energy domain. Indeed, in this energy range, the …

Ultra-high-energy (UHE,> 0.1 PeV) γ-ray astronomy is rapidly evolving into an expanding
branch of γ-ray astronomy with the surprising discovery of 12 PeVatrons and the detection of …

The present white paper is submitted as part of the “Snowmass” process to help inform the
long-term plans of the United States Department of Energy and the National Science …

Fewer than a dozen gamma-ray pulsars were known when the Fermi Gamma-ray Space
Telescope was launched on 2008 June 11, and the extent and diversity of the population …

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 the first catalog of very-high-energy and ultra-high-energy gamma-ray sources
detected by the Large High Altitude Air Shower Observatory. The catalog was compiled …

Abstract The ASTRI (Astrofisica con Specchi a Tecnologia Replicante Italiana) Project led by
the Italian National Institute for Astrophysics (INAF) is developing and will deploy at the …

Abstract The High-Altitude Water Cherenkov (HAWC) observatory is a second-generation
continuously operated, wide field-of-view, TeV gamma-ray observatory. The HAWC …

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 revisit constraints on decaying very heavy dark matter (VHDM) using the latest ultrahigh-
energy cosmic-ray (UHECR; E≳ 10 18 eV) data and ultrahigh-energy (UHE) γ-ray flux upper …