The mass composition of cosmic rays above 10^17 eV

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dc.creatorWatson, A. A.
dc.date2004-08-05
dc.date.accessioned2026-07-07T02:14:13Z
dc.date.available2026-07-07T02:14:13Z
dc.descriptionIt is shown that our knowledge of the mass composition of cosmic rays is deficient at all energies above 10^17 eV. Systematic differences between different measurements are discussed and, in particular, it is argued that there is no compelling evidence to support the common assumption that cosmic rays of the highest energies are protons. Our knowledge of the mass needs to be improved if we are to resolve uncertainties about the energy spectrum and interpret data on the arrival direction distribution of cosmic rays.
dc.description10 pages, 4 figures. Based on a talk given at the CRIS2004 meeting: `GZK and Surroundings': Catania 31 May - 4 June 2004
dc.identifierhttps://arxiv.org/abs/astro-ph/0408110
dc.identifierhttp://arxiv.org/abs/astro-ph/0408110
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8033
dc.subjectAstrophysics
dc.titleThe mass composition of cosmic rays above 10^17 eV
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