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Article Dans Une Revue Journal of Cosmology and Astroparticle Physics Année : 2013

Interpretation of the Depths of Maximum of Extensive Air Showers Measured by the Pierre Auger Observatory

P. Abreu
  • Fonction : Auteur
Pascal Lautridou
A. Stutz
  • Fonction : Auteur
  • PersonId : 1274065
R. Bardenet

Résumé

To interpret the mean depth of cosmic ray air shower maximum and its dispersion, we parametrize those two observables as functions of the first two moments of the $\ln A$ distribution. We examine the goodness of this simple method through simulations of test mass distributions. The application of the parameterization to Pierre Auger Observatory data allows one to study the energy dependence of the mean $\ln A$ and of its variance under the assumption of selected hadronic interaction models. We discuss possible implications of these dependences in term of interaction models and astrophysical cosmic ray sources.

Dates et versions

in2p3-00782043 , version 1 (29-01-2013)

Identifiants

Citer

P. Abreu, J. Aublin, A. Belletoile, P. Billoir, L. Caccianiga, et al.. Interpretation of the Depths of Maximum of Extensive Air Showers Measured by the Pierre Auger Observatory. Journal of Cosmology and Astroparticle Physics, 2013, 02, pp.026. ⟨10.1088/1475-7516/2013/02/026⟩. ⟨in2p3-00782043⟩
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