Time distribution of the muons observed with the Muon Detector of the Pierre Auger Observatory

J. M. FIGUEIRA; A. M. BOTTI; L. FERREYRO; N. GONZÁLEZ; J. HULSMAN; D. MELO; D. RAVIGNANI; M. PLATINO; C. SARMIENTO-CANO; B. ANDRADA; A. ETCHEGOYEN; G. SILLI; B. GARCÍA; E. HOLT; A. LUCERO; M. PERLIN; A. ALMELA; F. SÁNCHEZ; A. CANCIO; M. SCORNAVACCHE; A. FUSTER; M. R. HAMPEL; B. WUNDHEILER; M. JOSEBACHUILI; S. MÜLLER; M. RONCORONI; D. SCHMIDT; A. TABOADA

PUBLICACION INTERNA DE LA COLABORACION INTERNACIONAL AUGER

Pierre Auger Observatory

Año: 2019

2250-835X

The measurement of the muon production depth with the MD requires to measure the arrival time of muons. In this work we explain how we manage to time the muons without adding a dedicated GPS hardware. From the arrival times we measured the time distribution of muons as function of the distance to the shower axis and compared it with the corresponding all-particle distribution measured by the SD. As an application of the muon timing we also reconstructed the geometry of the showers observed by the MD. Along the way we selected the median arrival time as the MD time observable and estimated its uncertainty. We calculated the angular resolution of the MD and measured the angle between the arrival directions reconstructed by the MD and the SD for events observed in coincidence.