The γ-ray sky has been revealed in the last decade by the Fermi Large Area Telescope (LAT), offering an outstanding picture of our Universe at the highest energies. A great part of this γ-ray emission has been resolved, studied and attributed to known astrophysical objects and processes. The remaining component, the Unresolved Gamma-Ray Background (UGRB), represents the only available information about sources (astrophysical or more exotic, like dark matter) that are too faint to be detected individually. Negro will present the main analysis techniques used to assess the origin of the UGRB through its statistical properties and will review some of the most recent results, providing the status of the art and future perspectives on the topic.

Sponsored by the McDonnell Center for the Space Sciences.