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arXiv · 1801.02368

Cosmic horizon for GeV sources and photon-photon scattering

G. V. Vereshchagin
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Abstract

Photon-photon scattering of gamma-rays on the cosmic microwave background has been studied using the low energy approximation of the total cross section by Zdziarski & Svensson (1989); Svensson & Zdziarski (1990). Here, the cosmic horizon due to photon-photon scattering is accurately determined using the exact cross section and we find that photon-photon scattering dominates over the pair production at energies smaller than 1.68 GeV and at redshifts larger than 180.

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G. V. Vereshchagin. 2018-01-08. Cosmic horizon for GeV sources and photon-photon scattering. https://doi.org/10.1007/s10509-018-3247-8

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