Aperture calculation of the Pierre Auger Observatory surface detector

2005/11/03 by D. Allard, I. Allekotte, Allard, D. +28
Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Radio Astronomy Observations and Technology #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0511104

Proc. of the 29th ICRC (Pune, India), LaTeX, 4 pages, 5 figures

arxiv created 2005/11/03 · openalex publication_date 2005/11/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

We determine the instantaneous aperture and integrated exposure of the surface detector of the Pierre Auger Observatory, taking into account the trigger efficiency as a function of the energy, arrival direction (with zenith angle lower than 60 degrees) and nature of the primary cosmic-ray. We make use of the so-called Lateral Trigger Probability function (or LTP) associated with an extensive air shower, which summarizes all the relevant information about the physics of the shower, the water tank Cherenkov detector, and the triggers.

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