Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory

Autores
Dova, María Teresa; Hansen, Patricia María; Mariazzi, Analisa Gabriela; Sciutto, Sergio Juan; Vergara Quispe, Indira Dajhana; Wahlberg, Hernán Pablo; The Pierre Auger Collaboration
Año de publicación
2017
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 · 1018 eV, i.e. the region of the all-particle spectrum above the so-called “ankle” feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies, hard spectra and heavy chemical composition. We also show that uncertainties about physical quantities relevant to UHECR propagation and shower development have a non-negligible impact on the fit results.
Este documento tiene una corrección (ver documento relacionado).
La nómina completa de autores puede verse en el archivo asociado a este ítem.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
ultra high energy cosmic rays
cosmic ray experiments
cosmic ray theory
intergalactic media
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/81268
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/81268
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Combined fit of spectrum and composition data as measured by the Pierre Auger ObservatoryDova, María TeresaHansen, Patricia MaríaMariazzi, Analisa GabrielaSciutto, Sergio JuanVergara Quispe, Indira DajhanaWahlberg, Hernán PabloThe Pierre Auger CollaborationCiencias ExactasFísicaultra high energy cosmic rayscosmic ray experimentscosmic ray theoryintergalactic mediaWe present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 · 10<sup>18</sup> eV, i.e. the region of the all-particle spectrum above the so-called “ankle” feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies, hard spectra and heavy chemical composition. We also show that uncertainties about physical quantities relevant to UHECR propagation and shower development have a non-negligible impact on the fit results.Este documento tiene una corrección (ver documento relacionado).La nómina completa de autores puede verse en el archivo asociado a este ítem.Facultad de Ciencias ExactasInstituto de Física La Plata2017-04-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/81268spainfo:eu-repo/semantics/altIdentifier/issn/1475-7516info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2017/04/038info:eu-repo/semantics/reference/hdl/10915/81270info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:06Zoai:sedici.unlp.edu.ar:10915/81268Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:06.769SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
title Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
spellingShingle Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
Dova, María Teresa
Ciencias Exactas
Física
ultra high energy cosmic rays
cosmic ray experiments
cosmic ray theory
intergalactic media
title_short Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
title_full Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
title_fullStr Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
title_full_unstemmed Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
title_sort Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory
dc.creator.none.fl_str_mv Dova, María Teresa
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author Dova, María Teresa
author_facet Dova, María Teresa
Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author_role author
author2 Hansen, Patricia María
Mariazzi, Analisa Gabriela
Sciutto, Sergio Juan
Vergara Quispe, Indira Dajhana
Wahlberg, Hernán Pablo
The Pierre Auger Collaboration
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
ultra high energy cosmic rays
cosmic ray experiments
cosmic ray theory
intergalactic media
topic Ciencias Exactas
Física
ultra high energy cosmic rays
cosmic ray experiments
cosmic ray theory
intergalactic media
dc.description.none.fl_txt_mv We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 · 10<sup>18</sup> eV, i.e. the region of the all-particle spectrum above the so-called “ankle” feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies, hard spectra and heavy chemical composition. We also show that uncertainties about physical quantities relevant to UHECR propagation and shower development have a non-negligible impact on the fit results.
Este documento tiene una corrección (ver documento relacionado).
La nómina completa de autores puede verse en el archivo asociado a este ítem.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 · 10<sup>18</sup> eV, i.e. the region of the all-particle spectrum above the so-called “ankle” feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies, hard spectra and heavy chemical composition. We also show that uncertainties about physical quantities relevant to UHECR propagation and shower development have a non-negligible impact on the fit results.
publishDate 2017
dc.date.none.fl_str_mv 2017-04-20
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/81268
url http://sedici.unlp.edu.ar/handle/10915/81268
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1475-7516
info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2017/04/038
info:eu-repo/semantics/reference/hdl/10915/81270
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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