KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems

2005/05/19 by KASCADE Collaboration, T. Antoni, W.D. Apel +48 · 48 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #astro-ph

paper · pdf · doi:10.1016/j.astropartphys.2005.04.001

published as Astropart.Phys.24:1-25,2005 · 39 pages, accepted for publication in Astropart. Phys

arxiv created 2005/05/19 · openalex publication_date 2005/06/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

A composition analysis of KASCADE air shower data is performed by means of unfolding the two-dimensional frequency spectrum of electron and muon numbers. Aim of the analysis is the determination of energy spectra for elemental groups representing the chemical composition of primary cosmic rays. Since such an analysis depends crucially on simulations of air showers the two different hadronic interaction models QGSJet and SIBYLL are used for their generation. The resulting primary energy spectra show that the knee in the all particle spectrum is due to a steepening of the spectra of light elements but, also, that neither of the two simulation sets is able to describe the measured data consistently over the whole energy range with discrepancies appearing in different energy regions.

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