Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory

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 atmospher...

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Detalles Bibliográficos
Autores: 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
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/163497
Acceso en línea:http://hdl.handle.net/11336/163497
Access Level:acceso abierto
Palabra clave:AUGER OBSERVATORY
UHE COSMIC RAYS
LONGITUDINAL PROFILES
AVERAGE SHAPE
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario: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.

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