Volume 501 - 39th International Cosmic Ray Conference (ICRC2025) - Gamma-Ray Astrophysics
The cosmic-ray sea explains the diffuse Galactic gamma-ray and neutrino emission from GeV to PeV
D. Grasso*, P. De la Torre Luque, D. Gaggero, A. Marinelli and M. Rocamora
*: corresponding author
Full text: pdf
Pre-published on: September 23, 2025
Published on: —
Abstract
The LHAASO collaboration has recently released the spectrum and the angular
distribution of the gamma-ray Galactic diffuse emission from 1 TeV to 1 PeV measured with the
Kilometer-2 Array (KM2A) and the Water Cherenkov Detector Array (WCDA). We show that
those data are in remarkably good agreement with a set of pre-existing models that assume the emission
to be produced by the Galactic population of cosmic rays if its spectral shape traces that measured by CALET, DAMPE as well as KASCADE at higher energies. No extra-component besides the CR sea is needed to explain LHAASO results.
Spatial dependent CR transport models, although not required to reproduce LHAASO results, are in better agreement with them respect to conventional ones and needed to consistently reproduce Fermi-LAT and neutrino data.
DOI: https://doi.org/10.22323/1.501.0662
How to cite

Metadata are provided both in article format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in proceeding format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.