5 papers
Precise Measurement of the Cosmic Ray Helium Spectrum above 0.1 PeV
LHAASO Collaboration, Zhen Cao, F. Aharonian +321
We report a measurement of the cosmic ray helium energy spectrum in the energy interval 0.16 -- 13~PeV, derived by subtracting the proton spectrum from the light component~(proton…
Charged pion chain decay and the cosmic ray positron flux
Paolo Lipari
The study of the cosmic ray positron flux has attracted intense attention in recent years, especially because the observations suggest that it could receive contributions from sour…
Cosmic Ray Spatial Distribution and the Galactic/Extragalactic Transition
Paolo Lipari, Silvia Vernetto
Determining the spatial distribution of Galactic cosmic rays (CRs) is fundamental to understand how these particles propagate in interstellar space and to infer their source spectr…
The spectral shapes of Galactic gamma-ray source
Paolo Lipari, Silvia Vernetto
Recent observations by ground-based gamma-ray telescopes have led to the publication of catalogs listing sources observed in the TeV and PeV energy ranges. Photons of such high ene…
Resolved and unresolved Galactic gamma-ray sources
Paolo Lipari, Silvia Vernetto
The Galactic gamma-ray flux can be described as the sum of two components: the first is due to the emission from an ensemble of discrete sources, and the second is formed by the ph…