One of the most promising ways to probe intergalactic magnetic fields (IGMFs) is through
gamma rays produced in electromagnetic cascades initiated by high-energy gamma rays or …

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 …

The propagation of gamma-rays over cosmological distances is the subject of extensive
theoretical and observational research at GeV and TeV energies. The mean free path of …

The landscape of high-and ultra-high-energy astrophysics has changed in the last decade,
largely due to the inflow of data collected by large-scale cosmic-ray, gamma-ray, and …

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 …

The preliminary detections of the gamma-ray burst 221009A up to 18 TeV by LHAASO and
up to 251 TeV by Carpet 2 have been reported through Astronomer's Telegrams and …

The unification of quantum mechanics and general relativity has long been elusive. Only
recently have empirical predictions of various possible theories of quantum gravity been put …

Magnetic fields in galaxies and galaxy clusters are believed to be the result of the
amplification of intergalactic seed fields during the formation of large-scale structures in the …

We present an updated model for the extragalactic background light (EBL) from stars and
dust, over wavelengths≈ 0.1–1000 μm. This model uses accurate theoretical stellar spectra …

Many theories beyond the Standard Model of particle physics predict the existence of
axionlike particles (ALPs) that mix with photons in the presence of a magnetic field …