Non-linear cosmic ray Galactic transport in the light of AMS-02 and Voyager data

Understand

Context: Features in the spectra of primary cosmic rays (CRs) provide invaluable information on the propagation of these particles in the Galaxy.

• In the rigidity region around a few hundred GV, such features have been measured in the proton and helium spectra by the PAMELA experiment and later confirmed with a higher significance by AMS-02.
• We investigate the implications of these datasets for the scenario in which CRs propagate under the action of self-generated waves.
• Aims: We show that the recent data on the spectrum of protons and helium nuclei as collected with AMS-02 and Voyager are in very good agreement with the predictions of a model in which the transport of Galactic CRs is regulated by self-generated waves.