159 articles – 2004 Notices  [english version]
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Semaine de l'Astrophysique Française - Journées de la SF2A, Paris : France (2008)
Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory
B. Rouillé-D'Orfeuil1
PIERRE AUGER Collaboration(s)
(11/2008)

Atmospheric parameters, such as pressure (P), temperature (T) and density (ρ ∝ P/T), affect the development of extensive air showers (EAS) initiated by energetic cosmic rays (CRs). We have studied the impact of atmospheric variations on EAS by means of the surface detector of the Pierre Auger Observatory, analyzing the dependence on P and ρ of the counting rate of events. We show that the observed behaviour is explained by a model including P and ρ and validated with full EAS simulations.
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
APC - AHE
Physique/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique/Cosmologie et astrophysique extra-galactique

Planète et Univers/Astrophysique

Physique/Astrophysique/Phénomènes cosmiques de haute energie

Planète et Univers/Astrophysique/Phénomènes cosmiques de haute energie