The lateral distribution of extensive air showers produced by cosmic rays above 1019 eV as measured by water-Čerenkov detectors

R. N. Coy, G. Cunningham, C. L. Pryke, A. A. Watson

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Measurements of the lateral distribution function (ldf) of Extensive Air Showers (EAS) as recorded by the array of water-Čerenkov detectors at Haverah Park are described, and accurate experimental parameterizations expressing the mean ldf for 2 × 1017 < E < 4 × 1018 eV, 50 < r < 700 m, and θ < 45° are given. An extrapolation of these relations to the regime E ≥ 1019 eV and r > 700 m is described: extrapolation in this energy domain appears valid, and an approximate correction term is given for the larger core distances. The results of recent Monte Carlo simulations of shower development and detector behavior are compared to the parameterized ldf. The agreement is good increasing confidence that these simulations may be trusted as design tools for the Auger project, a proposed 'next generation' detector system.

Original languageEnglish (US)
Pages (from-to)263-270
Number of pages8
JournalAstroparticle Physics
Volume6
Issue number3-4
DOIs
StatePublished - Apr 1997
Externally publishedYes

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