A combined dark matter study of AMS-02 antiprotons and Fermi-LAT gamma rays

Understand

Observations of cosmic rays are a sensitive probe of dark matter annihilation in our Galaxy.

• In this article we present an analysis of the AMS-02 antiproton data, reducing cosmic-ray propagation uncertainties by fitting at the same time dark matter and propagation parameters.
• The result exhibits a possible hint for dark matter pointing to an annihilation cross section close to the thermal value.
• We investigate the compatibility of this signal with a dark matter interpretation of the Galactic center excess seen in the Fermi-LAT gamma-ray data and discuss implications for dark matter models.