11–15 Sept 2023
Europe/Rome timezone

Probing Dark Matter-Proton Interactions with Cosmic Reservoirs

11 Sept 2023, 15:45
15m
Room alpha

Room alpha

Gravitational Waves & MultiMessenger IDM: Indirect DM searches

Speaker

Antonio Ambrosone (Istituto Nazionale di Fisica Nucleare)

Description

Dark Matter (DM) existence is a milestone of the cosmological standard model and, yet, its discovery still remains a complete conundrum. In this contribution, we investigate a unique and original way to probe properties of light-particle dark matter candidates, exploiting the nature of the cosmic-ray (CR) transport inside starburst nuclei (SBNs). Indeed, SBNs are considered CR reservoirs, trapping them for ∼10^5 years up to ∼ PeVs energies, leading to copious production of gamma-rays and neutrinos. As a result, interactions between DM and protons might indelibly change CR transport in these galaxies, perturbing the gamma-rays and neutrino production. We are going to show that current gamma-ray observations pose strict limits on the elastic cross section down to σ_χp≃10^-34 cm^-2 for DM masses m_χ≤10^-3 MeV and that they have considerable room for improvement with the future gamma-ray measurements in the 0.1-10 TeV range from the Cherenkov Telescope Array.

Primary author

Antonio Ambrosone (Istituto Nazionale di Fisica Nucleare)

Co-authors

Antonio Marinelli (Istituto Nazionale di Fisica Nucleare) Damiano Fiorillo (Niels Bohr Institute, Copenhagen) Gennaro Miele (NA) Dr Marco Chianese (Università degli Studi di Napoli Federico II)

Presentation materials