Modulated antiproton fluxes for interstellar production models

Abstract

Expected differential fluxes of antiprotons at the Earth's orbit are calculated for minimum and medium strength of the solar modulation. We used an analytical solution in the force-field approximation. Local interstellar spectra are taken as predictions of different theoretical models of secondary production of antiprotons in the Galaxy. All the antiproton- as well as proton-fluxes are modulated in the same way for the purpose of a direct comparison in order to avoid additional uncertainties. It is shown that, in order to compare experimental data with the existing models predictions, next generation experiments should be able to measure fluxes of particles with energies above 100 MeV.