Observation of the suppression of the flux of cosmic rays above 4×1019eV

The energy spectrum of cosmic rays above 2.5×1018eV, derived from 20000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, JE-γ, at energies between 4×1018eV and 4×1019eV is 2.69±0.02(stat)±0.06(syst), steepening to 4.2±0.4(stat)±0.06(syst) at h...

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Guardado en:
Detalles Bibliográficos
Publicado: 2008
Materias:
Cosmology
Energy spectra
Particle fluxes
Pierre Auger observatory
Power-law
Spectral indices
Standard deviation
Cosmic rays
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v101_n6_p_Multitudinario
http://hdl.handle.net/20.500.12110/paper_00319007_v101_n6_p_Multitudinario
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319007_v101_n6_p_Multitudinario
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spelling paper:paper_00319007_v101_n6_p_Multitudinario2023-06-08T14:57:49Z Observation of the suppression of the flux of cosmic rays above 4×1019eV Cosmology Energy spectra Particle fluxes Pierre Auger observatory Power-law Spectral indices Standard deviation Cosmic rays The energy spectrum of cosmic rays above 2.5×1018eV, derived from 20000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, JE-γ, at energies between 4×1018eV and 4×1019eV 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. © 2008 The American Physical Society. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v101_n6_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_00319007_v101_n6_p_Multitudinario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cosmology
Energy spectra
Particle fluxes
Pierre Auger observatory
Power-law
Spectral indices
Standard deviation
Cosmic rays
spellingShingle Cosmology
Energy spectra
Particle fluxes
Pierre Auger observatory
Power-law
Spectral indices
Standard deviation
Cosmic rays
Observation of the suppression of the flux of cosmic rays above 4×1019eV
topic_facet Cosmology
Energy spectra
Particle fluxes
Pierre Auger observatory
Power-law
Spectral indices
Standard deviation
Cosmic rays
description The energy spectrum of cosmic rays above 2.5×1018eV, derived from 20000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, JE-γ, at energies between 4×1018eV and 4×1019eV 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. © 2008 The American Physical Society.
title Observation of the suppression of the flux of cosmic rays above 4×1019eV
title_short Observation of the suppression of the flux of cosmic rays above 4×1019eV
title_full Observation of the suppression of the flux of cosmic rays above 4×1019eV
title_fullStr Observation of the suppression of the flux of cosmic rays above 4×1019eV
title_full_unstemmed Observation of the suppression of the flux of cosmic rays above 4×1019eV
title_sort observation of the suppression of the flux of cosmic rays above 4×1019ev
publishDate 2008
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v101_n6_p_Multitudinario
http://hdl.handle.net/20.500.12110/paper_00319007_v101_n6_p_Multitudinario
_version_ 1768546009723437056

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