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Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory

B. Rouillé-d'Orfeuil 1
1 APC - AHE - APC - Astrophysique des Hautes Energies
APC (UMR_7164) - AstroParticule et Cosmologie, Dipartimento di Astronomia, Universita degli Studi di Bologna
Abstract : 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.
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http://hal.in2p3.fr/in2p3-00368034
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Submitted on : Friday, March 13, 2009 - 12:23:06 PM
Last modification on : Friday, October 30, 2020 - 12:04:03 PM

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B. Rouillé-d'Orfeuil. Atmospheric effects on extensive air showers observed with the Surface Detector of the Pierre Auger Observatory. Semaine de l'Astrophysique Française - Journées de la SF2A, Jun 2008, Paris, France. pp.277. ⟨in2p3-00368034⟩

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