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Type: Journal article
Title: Impact of atmospheric effects on the energy reconstruction of air showers observed by the surface detectors of the Pierre Auger Observatory
Author: Aab, A.
Abreu, P.
Aglietta, M.
Al Samarai, I.
Albuquerque, I.
Allekotte, I.
Almela, A.
Castillo, J.
Alvarez-Muniz, J.
Anastasi, G.
Anchordoqui, L.
Andradas, B.
Andringa, S.
Aramo, C.
Arqueros, F.
Arsene, N.
Asorey, H.
Assis, P.
Aublin, J.
Avila, G.
et al.
Citation: Journal of Instrumentation, 2017; 12(2):P02006-1-P02006-22
Publisher: Institute of Physics
Issue Date: 2017
ISSN: 1748-0221
Statement of
A. Aab … J.A. Bellido … S.G. Blaess … B.R. Dawson … T.D. Grubb … T.A. Harrison … G.C. Hill … P.H. Nguyen … S.J Saffi … J. Sorokin … P. van Bodegom … [et al.] (The Pierre Auger collaboration)
Abstract: Atmospheric conditions, such as the pressure (P), temperature (T) or air density (ρ∞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 1500m and the one with 750m 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.
Keywords: Cherenkov detectors; data analysis; large detector systems for particle and astroparticle physics; systematic effects
Rights: © 2017 IOP Publishing Ltd and Sissa Medialab srl
DOI: 10.1088/1748-0221/12/02/P02006
Grant ID: ARC
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