Origin of Cosmic Electrons from About102to106GeV

Abstract

The origin of high-energy cosmic electrons is considered. It is found that electrons of energies $\lesssim {10}^3$ GeV could have been produced by local supernovae associated with known radio remnants. At higher energies, observations of muon-poor air showers indicate the existence of electrons at ${10}^6$ GeV which may have originated entirely from the supernova Vela X.