Late arriving particles in cosmic ray air showers and determination of UHECR energies by AGASA

Hans Joachim Drescher, Glennys R. Farrar

    Research output: Contribution to journalArticle

    Abstract

    We give the first detailed study of the arrival time distribution of nucleons in UHECR air showers. We analyze in detail the influence of late arriving particles on the energy determination of the AGASA experiment, as well as how the arrival time distribution changes with distance from shower core. Our calculations are consistent with experimental observations of the AGASA group. Crucial to obtaining agreement, is the correct implementation of the energy loss for low-energy protons. We confirm AGASA's estimation of the error in their energy determination associated with late-arriving particles, assuming primary protons.

    Original languageEnglish (US)
    Pages (from-to)372-381
    Number of pages10
    JournalAstroparticle Physics
    Volume24
    Issue number4-5
    DOIs
    StatePublished - Dec 2005

    Keywords

    • AGASA
    • Air shower
    • Arrival time
    • Cosmic rays
    • Stimulating of air showers

    ASJC Scopus subject areas

    • Astronomy and Astrophysics

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