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The cosmic γ-ray spectrum from secondary particle production in cosmic-ray interactions

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Abstract

The cosmic γ-ray spectrum below 1 GeV arising from cosmic ray p-p interactions is calculated. Its characteristics are determined by the properties of secondary neutral pion production occurring at accelerator energies. A model is chosen for numerical calculations in which the two dominant modes of neutral pion production at accelerator energies are the production of the Δ (1.238) isobar and one fireball. The effect of α-p and p-α interactions on the cosmic γ-ray spectrum is also calculated. The final results are given in terms of both differential and integral γ-ray energy spectra.

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  1. Theoretical Studies Branch, Goddard Space Flight Center, Greenbelt, Md., USA

    F. W. Stecker

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  1. F. W. Stecker
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Stecker, F.W. The cosmic γ-ray spectrum from secondary particle production in cosmic-ray interactions. Astrophys Space Sci 6, 377–389 (1970). https://doi.org/10.1007/BF00653856

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  • DOI: https://doi.org/10.1007/BF00653856

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