Indication of a local fog of subankle ultrahigh energy cosmic rays
Indication of a local fog of subankle ultrahigh energy cosmic rays
During their propagation through intergalactic space, ultrahigh energy cosmic rays (UHECRs) interact with the background radiation fields. These interactions give rise to energetic electron/positron pairs and photons which in turn feed electromagnetic cascades, contributing to the isotropic gamma-ray background (IGRB). The gamma-ray flux level generated in this way highly depends …