The cosmic-ray electron flux measured by the PAMELA experiment between 1 and 625 GeV

Understand

Precision measurements of the electron component in the cosmic radiation provide important information about the origin and propagation of cosmic rays in the Galaxy.

• Here we present new results regarding negatively charged electrons between 1 and 625 GeV performed by the satellite-borne experiment PAMELA.
• This is the first time that cosmic-ray electrons have been identified above 50 GeV.
• The electron spectrum can be described with a single power law energy dependence with spectral index -3.18 +- 0.05 above the energy region influenced by the solar wind (> 30 GeV).