Ponente
Descripción
Recent measurements by the LHAASO, ARGO, HAWC, and Tibet ASγ collaborations have provided unprecedented observations of Galactic diffuse γ-ray emission across various regions of the Milky Way, spanning energies from 1 TeV to 1 PeV. These data offer a unique opportunity to probe the nature of the most powerful Galactic cosmic-ray (CR) accelerators and to test models of CR acceleration and transport.
In this talk, we present a comparative analysis of current models for the diffuse γ-ray emission arising from the Galactic CR population. Particular attention is given to the contribution of unresolved γ-ray sources and to contrasting scenarios of uniform versus spatially-dependent CR propagation. We highlight that that the diffuse emission from CR interactions must dominate the emission, with a subdominant (but non-negligible) contribution from unresolved sources.
Finally, we examine the associated Galactic neutrino emission predicted by these models. Our findings suggest that unresolved sources cannot account for the dominant contribution to the observed neutrino flux. Moreover, spatially-dependent CR propagation models are found to be in good agreement with the best-fit spectra reported by ANTARES and IceCube for both the Galactic Center Ridge and the broader Galactic Plane.
