12–16 Sept 2022
Centro Congressi Federico II
Europe/Rome timezone

Gamma Rays and Neutrinos from the Galactic Plane at the PeV frontier

15 Sept 2022, 10:10
20m
Aula Magna (Centro Congressi Federico II)

Aula Magna

Centro Congressi Federico II

Via Partenope, 36, 80121 Napoli NA

Speaker

Dario Grasso (Istituto Nazionale di Fisica Nucleare)

Description

Last year the Tibet ASgamma experiment reported the observation of a diffuse gamma-ray emission from the Galactic plane with energy up to the PeV. This finding seems to be confirmed by LHAASO preliminary results. Both measurements provide the first evidence of a diffuse gamma-ray emission throughout the Galaxy up to such high energies.
These results have relevant implications for neutrino astronomy since they strengthen the expectation that a neutrino diffuse emission from the Galactic plane could soon be discovered by IceCube and KM3NeT.
To explore this possibility we use physically motivated numerical models which reproduce the observed gamma-ray diffuse emission angular distribution and spectral energy distribution from few GeV up to the PeV under the hypothesis that is mostly originated by the cosmic ray population of the Galaxy.
We will discuss the possible detectability of the associated neutrino emission and the valuable implications it may have for understanding the origin and propagation of cosmic rays.

Partially based on: https://arxiv.org/abs/2203.15759

Primary authors

Dr Antonio Marinelli (Università di Napoli, Federico II) Dr Daniele Gaggero (Instituto de Física Corpuscular, IFIC (CSIC -UV) ) Dario Grasso (Istituto Nazionale di Fisica Nucleare) Pedro De la Torre Luque (Oskar Klein Centre, Stockholm University)

Presentation materials