Upper limit on the diffuse extragalactic radio background from GZK photon observation

Graciela B. Gelmini; Oleg Kalashev; Dmitri Semikoz

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arXiv · 2206.00408

Upper limit on the diffuse extragalactic radio background from GZK photon observation

Graciela B. Gelmini·Oleg Kalashev·Dmitri Semikoz

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Abstract

Here we point out that an observation of Ultra-High Energy Cosmic Ray (UHECR) photons, "GZK photons", could provide an upper limit on the level of the Extra-Galactic Radio Background, depending on the level of UHECR proton primaries (to be determined after a few years of data taking by the Pierre Auger Observatory upgrade AugerPrime). We also update our 2005 prediction of the range of GZK photon fluxes expected from proton primaries.

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Graciela B. Gelmini, Oleg Kalashev, Dmitri Semikoz. 2022-06-01. Upper limit on the diffuse extragalactic radio background from GZK photon observation. https://arxiv.org/abs/2206.00408

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