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The origin of cosmic rays at all energies is still uncertain. In this paperwe present and explore an astrophysical scenario to produce cosmic rays withenergy ranging from below $10^{15}$ o $3 \times 10^{20}$ eV. We show here thatjust our Galaxy and the radio galaxy Cen A, each with their own galactic cosmicray particles, but with those from the radio galaxy pushed up in energy by arelativistic shock in the jet emanating from the active black hole, aresufficient to describe the most recent data in the energy range PeV to nearZeV. Data are available over this entire energy range from the experimentsKASCADE, KASCADE-Grande and Pierre Auger Observatory. The energy spectrumcalculated here correctly reproduces the measured spectrum beyond the knee, andcontrary to widely held expectations, no other extragalactic source populationis required to explain the data, even at energies far below the general cutoffexpected at $6 \times 10^{19}$ eV, the Greisen-Zatsepin-Kuzmin turn-off due tointeraction with the cosmological microwave background. We present severalpredictions for the source population, the cosmic ray composition and thepropagation to Earth which can be tested in the near future.

Centaurus A: the one extragalactic source of cosmic rays with energies above the knee