info:eu-repo/semantics/article
Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory
Fecha
2019-03Registro en:
Sciutto, Sergio Juan; Asorey, Hernán Gonzalo; Mollerach, Maria Silvia; Figueira, Juan Manuel; Botti, Ana Martina; et al.; Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2019; 03; 3-2019; 18-38
1475-7516
CONICET Digital
CONICET
Autor
Sciutto, Sergio Juan
Asorey, Hernán Gonzalo
Mollerach, Maria Silvia
Figueira, Juan Manuel
Botti, Ana Martina
Bertou, Xavier Pierre Louis
Supanitsky, Alberto Daniel
Gomez Berisso, Mariano
Lucero, Luis Agustin
Golup, Geraldina Tamara
Melo, Diego Gabriel
Garcia, Beatriz Elena
Roulet, Esteban
Perlin, Matias
Andrada, María Belén
Almela, Daniel Alejandro
Bonifazi, Carla Brenda
Etchegoyen, Alberto
Mariazzi, Analisa Gabriela
Taboada Nunez, Alvaro
Dasso, Sergio Ricardo
Scornavacche, Marina Andrea
Hansen, Patricia Maria
Ferreyro, Luciano Pablo
González, Nicolás Martín
Micheletti, Maria Isabel
Vergara Quispe, Indira Dajhana
Sarmiento Cano, Christian Andres
Platino, Manuel
Sanchez, Federico Andrés
Tueros, Matias Jorge
The Pierre Auger Collaboration
Resumen
The profile of the longitudinal development of showers produced by ultra-highenergy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we present the first measurement of the average shower profile in traversed atmospheric depth at the Pierre Auger Observatory. The shapes of profiles are well reproduced by the Gaisser-Hillas parametrization within the range studied, for E > 10^17.8 eV. A detailed analysis of the systematic uncertainties is performed using ten years of data and a full detector simulation. The average shape is quantified usingtwo variables related to the width and asymmetry of the profile, and the results are compared with predictions of hadronic interaction models for different primary particles.