A multivariate study of mass composition for simulated showers at the Auger South Observatory

Details A multivariate study of mass composition for simulated showers at the Auger South Observatory A multivariate study of mass composition for simulated showers at the Auger South Observatory

2001-09-10

arxiv.org/abs/astro-ph/0109140v1

Proc. 27th ICRC, Hamburg, p. 518, 2001

Astronomy and Astrophysics

Astrophysics

Updated version including neural network calculations (not in the proc. version)

Scientific paper

The output parameters from the ground array of the Auger South observatory, were simulated for the typical instrumental and environmental conditions at its Malarg\"ue site using the code sample-sim. Extensive air showers started by photons, protons and iron nuclei at the top of the atmosphere were used as triggers. The study utilized the air shower simulation code Aires with both QGSJet and Sibyll hadronic interaction models. A total of 1850 showers were used to produce more than 35,000 different ground events. We report here on the results of a multivariate analysis approach, including principal component analysis and neural networks, to the development of new primary composition diagnostics.

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