Measurement of the cosmic ray spectrum above 4×10^18 eV using inclined events detected with the Pierre Auger Observatory

A measurement of the cosmic-ray spectrum for energies exceeding 4×1018 eVis presented, which is based on the analysis of showers with zenith angles greater than60◦ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppressio...

Descripción completa

Detalles Bibliográficos
Autores: Aab, A., Abreu, P., Aglietta, M., Ahn, E. J., Al Samarai, I, Allekotte, Ingomar, Almela, Daniel Alejandro, Asorey, Hernán Gonzalo, Ave, M., Avila, G., Bertou, Xavier Pierre Louis, Contreras, F., Dasso, Sergio Ricardo, Dova, Maria Teresa, Etchegoyen, Alberto, Figueira, Juan Manuel, Freire, Martín Miguel, Garcia, Beatriz Elena, Golup, Geraldina Tamara, Gomez Berisso, Mariano, Gómez Vitale, P. F., González, N., Hampel, Matias Rolf, Hansen, Patricia Maria, Harari, Diego Dario, Jarne, Cecilia Gisele, Josebachuili Ogando, Mariela Gisele, Kleinfeller, J., Lucero, A., Mariazzi, Analisa Gabriela, Masías Meza, Jimmy Joel, Melo, Diego Gabriel, Micheletti, Maria Isabel, Mollerach, Maria Silvia, Pallotta, Juan Vicente, Piegaia, Ricardo Nestor, Pieroni, Pablo Emanuel, Platino, Manuel, Purrello, Víctor Hugo, Quel, E. J., Ravignani, D., Ristori, Pablo Roberto, Rodriguez Rojo, J., Roulet, Esteban, Rovero, Adrian Carlos, Sánchez, F., Sato, R., Scarso, C., Sciutto, Sergio Juan, Sidelnik, Iván Pedro, Squartini, R., Suarez, F., Supanitsky, Alberto Daniel, Taborda Pulgarin, Oscar Alejandro, Tapia, A., Videla, M., Wahlberg, H., Wainberg, O.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/47691
Acceso en línea:http://hdl.handle.net/11336/47691
Access Level:acceso abierto
Palabra clave:Cosmic ray spectrum
Pierre Auger
Showers
Ultra high energy cosmic rays
Cosmic ray experiments
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:A measurement of the cosmic-ray spectrum for energies exceeding 4×1018 eVis presented, which is based on the analysis of showers with zenith angles greater than60◦ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies.Above 5.3×1018 eV, the ?ankle?, the flux can be described by a power law E −γ with index γ = 2.70 ± 0.02 (stat) ± 0.1 (sys) followed by a smooth suppression region. For the energy(Es ) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find Es = (5.12 ± 0.25 (stat)−1.2 (sys))×10 eV.

Similares en LA Referencia