Can the TeV gamma-ray sky probe the galactic cosmic ray distribution?. (February 2020)

• Record Type: Journal Article
• Authors: Pagliaroli, G.; Cataldo, M.; Vecchiotti, V.; Villante, F.L.
• Is Part Of: Journal of physics. Volume 1468(2020)
• Publication Date: 2020-02
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1468/1/012099
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We evaluate the diffuse gamma-ray flux at TeV energies produced by hadronic interactions of cosmic rays with the gas contained in the galactic disk. We consider different assumptions for the cosmic ray distribution, including the recently emerged possibility of a harder cosmic ray spectrum in the inner Galaxy. We show that observational data provided by Argo-YBJ, HESS, HAWC and Milagro, can already discriminate among different hyphoteses. The constraints can be strengthened if the contribution of sources not resolved by HESS is taken into account.