The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory

We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of the spectrum is observed, confirming the presence of the so-called second-knee feature. The spectrum is then combined...

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Autores principales: Binet, V., Micheletti, M. I., The Pierre Auger Observatory
Formato: article artículo publishedVersion
Lenguaje:Inglés
Publicado: Springer Science and Business 2022
Materias:
Extensive air showers
Cosmic ray showers
High energy
Acceso en línea:http://hdl.handle.net/2133/23683
http://hdl.handle.net/2133/23683
Aporte de:
Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR) de Universidad Nacional de Rosario
id I15-R121-2133-23683
record_format dspace
spelling I15-R121-2133-236832023-05-18T18:09:38Z The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory Binet, V. Micheletti, M. I. The Pierre Auger Observatory Extensive air showers Cosmic ray showers High energy We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of the spectrum is observed, confirming the presence of the so-called second-knee feature. The spectrum is then combined with that of the 1500 m array to produce a single measurement of the flux, linking this spectral feature with the three additional breaks at the highest energies. The combined spectrum, with an energy scale set calorimetrically via fluorescence telescopes and using a single detector type, results in the most statistically and systematically precise measurement of spectral breaks yet obtained. These measurements are critical for furthering our understanding of the highest energy cosmic rays. Fil: Binet, V. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Física de Rosario (IFIR-CONICET); Argentina. Fil: Micheletti, M. I. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Física de Rosario (IFIR-CONICET); Argentina. 2022-05-19T17:03:36Z 2022-05-19T17:03:36Z 2021-11-02 2022-05-19T17:03:36Z 2022-05-19T17:03:36Z 2021-11-02 article artículo publishedVersion 1434-6052 http://hdl.handle.net/2133/23683 http://hdl.handle.net/2133/23683 eng https://link.springer.com/article/10.1140/epjc/s10052-021-09700-w https://doi.org/10.1140/epjc/s10052-021-09700-w https://creativecommons.org/licenses/by/4.0/ Pierre Auger Observatory Attribution 4.0 International (CC BY 4.0) openAccess application/pdf Springer Science and Business
institution Universidad Nacional de Rosario
institution_str I-15
repository_str R-121
collection Repositorio Hipermedial de la Universidad Nacional de Rosario (UNR)
language Inglés
topic Extensive air showers
Cosmic ray showers
High energy
spellingShingle Extensive air showers
Cosmic ray showers
High energy
Binet, V.
Micheletti, M. I.
The Pierre Auger Observatory
The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
topic_facet Extensive air showers
Cosmic ray showers
High energy
description We present a measurement of the cosmic-ray spectrum above 100 PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750 m. An inflection of the spectrum is observed, confirming the presence of the so-called second-knee feature. The spectrum is then combined with that of the 1500 m array to produce a single measurement of the flux, linking this spectral feature with the three additional breaks at the highest energies. The combined spectrum, with an energy scale set calorimetrically via fluorescence telescopes and using a single detector type, results in the most statistically and systematically precise measurement of spectral breaks yet obtained. These measurements are critical for furthering our understanding of the highest energy cosmic rays.
format article
artículo
publishedVersion
author Binet, V.
Micheletti, M. I.
The Pierre Auger Observatory
author_facet Binet, V.
Micheletti, M. I.
The Pierre Auger Observatory
author_sort Binet, V.
title The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
title_short The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
title_full The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
title_fullStr The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
title_full_unstemmed The energy spectrum of cosmic rays beyond the turn-down around 1017 eV as measured with the surface detector of the Pierre Auger Observatory
title_sort energy spectrum of cosmic rays beyond the turn-down around 1017 ev as measured with the surface detector of the pierre auger observatory
publisher Springer Science and Business
publishDate 2022
url http://hdl.handle.net/2133/23683
http://hdl.handle.net/2133/23683
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