Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV
The energy spectrum of cosmic rays above 2.5 × 10¹⁸ eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, J ∝ E<sup>-γ</sup>, at energies between 4 × 10¹⁸ eV and 4 × 10¹⁹ eV is 2.69 ± 0.02(stat) ± 0.06(syst), ste...
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| Autores principales: | , , , , , , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2008
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126615 |
| Aporte de: |
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I19-R120-10915-126615 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Exactas Física energy spectrum cosmic rays spectral index particle flux |
| spellingShingle |
Ciencias Exactas Física energy spectrum cosmic rays spectral index particle flux Badagnani, Daniel Omar Dova, María Teresa Epele, Luis Nicolás Gómez Albarracín, Flavia Alejandra Grunfeld, Christian Martín Hansen, Patricia María Manceñido, Mónica E. Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Tarutina, Tatiana Tueros, Matías Jorge Veiga, Alejandro Luis Wahlberg, Hernán Pablo The Pierre Auger Collaboration Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| topic_facet |
Ciencias Exactas Física energy spectrum cosmic rays spectral index particle flux |
| description |
The energy spectrum of cosmic rays above 2.5 × 10¹⁸ eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, J ∝ E<sup>-γ</sup>, at energies between 4 × 10¹⁸ eV and 4 × 10¹⁹ eV is 2.69 ± 0.02(stat) ± 0.06(syst), steepening to 4.2 ± 0.4(stat) ± 0.06(syst) at higher energies. The hypothesis of a single power law is rejected with a significance greater than 6 standard deviations. The data are consistent with the prediction by Greisen and by Zatsepin and Kuz'min. |
| format |
Articulo Articulo |
| author |
Badagnani, Daniel Omar Dova, María Teresa Epele, Luis Nicolás Gómez Albarracín, Flavia Alejandra Grunfeld, Christian Martín Hansen, Patricia María Manceñido, Mónica E. Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Tarutina, Tatiana Tueros, Matías Jorge Veiga, Alejandro Luis Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
| author_facet |
Badagnani, Daniel Omar Dova, María Teresa Epele, Luis Nicolás Gómez Albarracín, Flavia Alejandra Grunfeld, Christian Martín Hansen, Patricia María Manceñido, Mónica E. Mariazzi, Analisa Gabriela Moreno, Juan Cruz Sciutto, Sergio Juan Tarutina, Tatiana Tueros, Matías Jorge Veiga, Alejandro Luis Wahlberg, Hernán Pablo The Pierre Auger Collaboration |
| author_sort |
Badagnani, Daniel Omar |
| title |
Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| title_short |
Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| title_full |
Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| title_fullStr |
Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| title_full_unstemmed |
Observation of the Suppression of the Flux of Cosmic Rays above 4 × 10¹⁹ eV |
| title_sort |
observation of the suppression of the flux of cosmic rays above 4 × 10¹⁹ ev |
| publishDate |
2008 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126615 |
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