# Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory

Abstract : Atmospheric conditions, such as the pressure (P), temperature (T) or air density ($\rho \propto P/T$), affect the development of extended air showers initiated by energetic cosmic rays. We study the impact of the atmospheric variations on the reconstruction of air showers with data from the arrays of surface detectors of the Pierre Auger Observatory, considering separately the one with detector spacings of 1500 m and the one with 750 m spacing. We observe modulations in the event rates that are due to the influence of the air density and pressure variations on the measured signals, from which the energy estimators are obtained. We show how the energy assignment can be corrected to account for such atmospheric effects.
Type de document :
Article dans une revue
Journal of Instrumentation, IOP Publishing, 2017, 12, pp.P02006. 〈10.1088/1748-0221/12/02/P02006〉

http://hal.in2p3.fr/in2p3-01464133
Contributeur : Sylvie Flores <>
Soumis le : vendredi 10 février 2017 - 07:44:04
Dernière modification le : vendredi 31 août 2018 - 09:32:08

### Citation

A. Aab, I. Al Samarai, J. Aublin, P. Billoir, R. Gaior, et al.. Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory. Journal of Instrumentation, IOP Publishing, 2017, 12, pp.P02006. 〈10.1088/1748-0221/12/02/P02006〉. 〈in2p3-01464133〉

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