New constraints from Haverah Park data on the photon and iron fluxes of UHE cosmic rays

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dc.creatorAve, M.
dc.creatorHinton, J. A.
dc.creatorVazquez, R. A.
dc.creatorWatson, A. A.
dc.creatorZas, E.
dc.date2000-07-26
dc.date2000-07-27
dc.date.accessioned2026-07-07T12:00:43Z
dc.date.available2026-07-07T12:00:43Z
dc.descriptionUsing data from inclined events ($60^{\circ}<θ<80^{\circ}$) recorded by the Haverah Park shower detector, we show that above 10^19 eV less than 30% of the primary cosmic rays can be photons or iron nuclei at the 95% confidence level. Above 4 10^19 eV less than 55% of the cosmic rays can be photonic at the same confidence level. These limits place important constraints on some models of the origin of ultra high energy cosmic rays. Details of two new events above 10^20 eV are reported.
dc.descriptionLatex, 4 pages, 2 eps figures included. Accepted for publication in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/astro-ph/0007386
dc.identifierhttp://arxiv.org/abs/astro-ph/0007386
dc.identifierPhys.Rev.Lett.85:2244-2247,2000
dc.identifierdoi:10.1103/PhysRevLett.85.2244
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206878
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNew constraints from Haverah Park data on the photon and iron fluxes of UHE cosmic rays
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