A study of the effect of molecular and aerosol conditions in the atmosphere on air fluorescence measurements at the Pierre Auger Observatory
Document Type
Article
Publication Date
1-1-2010
Abstract
The air fluorescence detector of the Pierre Auger Observatory is designed to perform calorimetric measurements of extensive air showers created by cosmic rays of above 1018 eV. To correct these measurements for the effects introduced by atmospheric fluctuations, the Observatory contains a group of monitoring instruments to record atmospheric conditions across the detector site, an area exceeding 3000 km2. The atmospheric data are used extensively in the reconstruction of air showers, and are particularly important for the correct determination of shower energies and the depths of shower maxima. This paper contains a summary of the molecular and aerosol conditions measured at the Pierre Auger Observatory since the start of regular operations in 2004, and includes a discussion of the impact of these measurements on air shower reconstructions. Between 1018 and 1020 eV, the systematic uncertainties due to all atmospheric effects increase from 4% to 8% in measurements of shower energy, and 4 g cm- 2 to 8 g cm- 2 in measurements of the shower maximum. © 2010 Elsevier B.V. All rights reserved.
Publication Title
Astroparticle Physics
Recommended Citation
Abraham, J.,
Abreu, P.,
Aglietta, M.,
Aguirre, C.,
Ahn, E.,
Allard, D.,
Allekotte, I.,
Allen, J.,
Alvarez-Muñiz, J.,
Ambrosio, M.,
Anchordoqui, L.,
Andringa, S.,
Anzalone, A.,
Aramo, C.,
Arganda, E.,
Arisaka, K.,
Arqueros, F.,
Asch, T.,
Asorey, H.,
Assis, P.,
Aublin, J.,
Ave, M.,
Avila, G.,
Bäcker, T.,
Badagnani, D.,
Barber, K.,
Barbosa, A.,
Barroso, S.,
Baughman, B.,
Bauleo, P.,
Beatty, J.,
&
Beau, T.
(2010).
A study of the effect of molecular and aerosol conditions in the atmosphere on air fluorescence measurements at the Pierre Auger Observatory.
Astroparticle Physics,
33(2), 108-129.
http://doi.org/10.1016/j.astropartphys.2009.12.005
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5976