Artículo
Measurement of the cosmic ray spectrum above 4×10^18 eV using inclined events detected with the Pierre Auger Observatory
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.
Fecha de publicación:
08/2014
Editorial:
IOP Publishing
Revista:
Journal of Cosmology and Astroparticle Physics
ISSN:
1475-7516
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
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.
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Citación
Aab, A.; Abreu, P.; Aglietta, M.; Ahn, E. J.; Al Samarai, I; et al.; Measurement of the cosmic ray spectrum above 4×10^18 eV using inclined events detected with the Pierre Auger Observatory; IOP Publishing; Journal of Cosmology and Astroparticle Physics; 2015; 049; 8-2014; 1-22
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