Cosmic ray antiprotons in closed galaxy model

Astronomy and Astrophysics – Astronomy

Scientific paper

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Abundance, Antiprotons, Astronomical Models, Cosmic Rays, Galaxies, Particle Flux Density, Galactic Nuclei, Interstellar Matter, Particle Acceleration

Scientific paper

The flux of secondary antiprotons expected for the leaky-box model was calculated as well as that for the closed galaxy model of Peters and Westergard (1977). The antiproton/proton ratio observed at several GeV is a factor of 4 higher than the prediction for the leaky-box model but is consistent with that predicted for the closed galaxy model. New low energy data is not consistent with either model. The possibility of a primary antiproton component is discussed.

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