Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV
- 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
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Cosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arrival directions. Using 3 × 10 4 cosmic rays with energies above 8 × 10 18 electron volts, recorded with the Pierre Auger Observatory from a total exposure of 76,800 km2 sr year, we determined the existence of anisotropy in arrival directions. The anisotropy, detected at more than a 5.2σ level of significance, can be described by a dipole with an amplitude of 6.5 +1.3 -0.9 percent toward right ascension αd = 100 ± 10 degrees and declination δd = -24 +12 -13 degrees. That direction indicates an extragalactic origin for these ultrahighenergy particles.
La nómina completa de autores puede verse en el archivo asociado a este ítem.
Facultad de Ciencias Exactas - Materia
-
Física
Física
Large-scale anisotropy
Cosmic rays
Pierre Auger observatory - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/78400
Ver los metadatos del registro completo
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Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eVDova, María TeresaHansen, Patricia MaríaMariazzi, Analisa GabrielaSciutto, Sergio JuanVergara Quispe, Indira DajhanaWahlberg, Hernán PabloThe Pierre Auger CollaborationFísicaFísicaLarge-scale anisotropyCosmic raysPierre Auger observatoryCosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arrival directions. Using 3 × 10 4 cosmic rays with energies above 8 × 10 18 electron volts, recorded with the Pierre Auger Observatory from a total exposure of 76,800 km2 sr year, we determined the existence of anisotropy in arrival directions. The anisotropy, detected at more than a 5.2σ level of significance, can be described by a dipole with an amplitude of 6.5 +1.3 -0.9 percent toward right ascension αd = 100 ± 10 degrees and declination δd = -24 +12 -13 degrees. That direction indicates an extragalactic origin for these ultrahighenergy particles.La nómina completa de autores puede verse en el archivo asociado a este ítem.Facultad de Ciencias Exactas2017-09-22info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1266-1270http://sedici.unlp.edu.ar/handle/10915/78400enginfo:eu-repo/semantics/altIdentifier/issn/1095-9203info:eu-repo/semantics/altIdentifier/doi/10.1126/science.aan4338info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:43:58Zoai:sedici.unlp.edu.ar:10915/78400Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:43:58.646SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| title |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| spellingShingle |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV Dova, María Teresa Física Física Large-scale anisotropy Cosmic rays Pierre Auger observatory |
| title_short |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| title_full |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| title_fullStr |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| title_full_unstemmed |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| title_sort |
Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 10 18 eV |
| 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 |
Física Física Large-scale anisotropy Cosmic rays Pierre Auger observatory |
| topic |
Física Física Large-scale anisotropy Cosmic rays Pierre Auger observatory |
| dc.description.none.fl_txt_mv |
Cosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arrival directions. Using 3 × 10 4 cosmic rays with energies above 8 × 10 18 electron volts, recorded with the Pierre Auger Observatory from a total exposure of 76,800 km2 sr year, we determined the existence of anisotropy in arrival directions. The anisotropy, detected at more than a 5.2σ level of significance, can be described by a dipole with an amplitude of 6.5 +1.3 -0.9 percent toward right ascension αd = 100 ± 10 degrees and declination δd = -24 +12 -13 degrees. That direction indicates an extragalactic origin for these ultrahighenergy particles. La nómina completa de autores puede verse en el archivo asociado a este ítem. Facultad de Ciencias Exactas |
| description |
Cosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arrival directions. Using 3 × 10 4 cosmic rays with energies above 8 × 10 18 electron volts, recorded with the Pierre Auger Observatory from a total exposure of 76,800 km2 sr year, we determined the existence of anisotropy in arrival directions. The anisotropy, detected at more than a 5.2σ level of significance, can be described by a dipole with an amplitude of 6.5 +1.3 -0.9 percent toward right ascension αd = 100 ± 10 degrees and declination δd = -24 +12 -13 degrees. That direction indicates an extragalactic origin for these ultrahighenergy particles. |
| publishDate |
2017 |
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2017-09-22 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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http://sedici.unlp.edu.ar/handle/10915/78400 |
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eng |
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eng |
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