Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory

Risultato della ricerca: Article

404 Citazioni (Scopus)

Abstract

We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E- γ with index γ = 3.3 below the ankle which is measured at log10 (Eankle / eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved.
Lingua originaleEnglish
pagine (da-a)239-246
Numero di pagine8
RivistaPHYSICS LETTERS. SECTION B
Volume685
Stato di pubblicazionePublished - 2010

Fingerprint

cosmic rays
observatories
energy spectra
detectors
retarding
statistics
fluorescence
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cita questo

@article{6a8850351c7d456b9d3a14c6793abce5,
title = "Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory",
abstract = "We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E- γ with index γ = 3.3 below the ankle which is measured at log10 (Eankle / eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10 (E / eV) = 19.5, detected with high statistical significance. {\circledC} 2010 Elsevier B.V. All rights reserved.",
author = "Domenico Tegolo",
year = "2010",
language = "English",
volume = "685",
pages = "239--246",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

TY - JOUR

T1 - Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory

AU - Tegolo, Domenico

PY - 2010

Y1 - 2010

N2 - We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E- γ with index γ = 3.3 below the ankle which is measured at log10 (Eankle / eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved.

AB - We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E- γ with index γ = 3.3 below the ankle which is measured at log10 (Eankle / eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10 (E / eV) = 19.5, detected with high statistical significance. © 2010 Elsevier B.V. All rights reserved.

UR - http://hdl.handle.net/10447/226385

M3 - Article

VL - 685

SP - 239

EP - 246

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -