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Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 1018 eV

dc.contributor.authorAab, A.
dc.contributor.authorBueno Villar, Antonio 
dc.contributor.authorPierre Auger Collaboration
dc.date.accessioned2020-07-22T10:19:03Z
dc.date.available2020-07-22T10:19:03Z
dc.date.issued2017-09-22
dc.identifier.citationPublished version: Aab, A., Abreu, P., Aglietta, M., Al Samarai, I., Albuquerque, I. F. M., Allekotte, I., ... & Anchordoqui, L. (2017). Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8× 1018 eV. Science, 357(6357), 1266-1270. [DOI: 10.1126/science.aan4338]es_ES
dc.identifier.otherhttps://arxiv.org/abs/1709.07321
dc.identifier.urihttp://hdl.handle.net/10481/63100
dc.descriptionThe successful installation, commissioning, and operation of the Pierre Auger Observatory would not have been possible without the strong commitment and effort from the technical and administrative staff in Malargüe. We are very grateful to the following agencies and organizations for financial support: Argentina – Comisión Nacional de Energía Atómica; Agencia Nacional de Promoción Científica y Tecnológica (ANPCyT); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Gobierno de la Provincia de Mendoza; Municipalidad de Malargüe; NDM Holdings and Valle Las Leñas; in gratitude for their continuing cooperation over land access; Australia – the Australian Research Council; Brazil – Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Financiadora de Estudos e Projetos (FINEP); Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro (FAPERJ); São Paulo Research Foundation (FAPESP) Grants No. 2010/07359-6 and No. 1999/05404-3; Ministério de Ciência e Tecnologia (MCT); Czech Republic – Grant No. MSMT CR LG15014, LO1305, LM2015038 and CZ.02.1.01/0.0/0.0/16_013/0001402; France – Centre de Calcul IN2P3/CNRS; Centre National de la Recherche Scientifique (CNRS); Conseil Régional Ile-de-France; Département Physique Nucléaire et Corpusculaire (PNCIN2P3/CNRS); Département Sciences de l’Univers (SDU-INSU/CNRS); Institut Lagrange de Paris (ILP) Grant No. LABEX ANR-10-LABX-63 within the Investissements d’Avenir Programme Grant No. ANR-11-IDEX-0004-02; Germany – Bundesministerium für Bildung und Forschung (BMBF); Deutsche Forschungsgemeinschaft (DFG); Finanzministerium Baden-Württemberg; Helmholtz Alliance for Astroparticle Physics (HAP); Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF); Ministerium für Innovation, Wissenschaft und Forschung des Landes Nordrhein-Westfalen; Ministerium für Wissenschaft, Forschung und Kunst des Landes Baden-Württemberg; Italy – Istituto Nazionale di Fisica Nucleare (INFN); Istituto Nazionale di Astrofisica (INAF); Ministero dell’Istruzione, dell’Universitá e della Ricerca (MIUR); CETEMPS Center of Excellence; Ministero degli Affari Esteri (MAE); Mexico – Consejo Nacional de Ciencia y Tecnología (CONACYT) No. 167733; Universidad Nacional Autónoma de México (UNAM); PAPIIT DGAPA-UNAM; The Netherlands – Ministerie van Onderwijs, Cultuur en Wetenschap; Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO); Stichting voor Fundamenteel Onderzoek der Materie (FOM); Poland – National Centre for Research and Development, Grants No. ERA-NET-ASPERA/01/11 and No. ERA-NET-ASPERA/02/11; National Science Centre, Grants No. 2013/08/M/ST9/00322, No. 2013/08/M/ST9/00728 and No. HARMONIA 5–2013/10/M/ST9/00062, UMO-2016/22/M/ST9/00198; Portugal – Portuguese national funds and FEDER funds within Programa Operacional Factores de Competitividade through Fundação para a Ciência e a Tecnologia (COMPETE); Romania – Romanian Authority for Scientific Research ANCS; CNDI-UEFISCDI partnership projects Grants No. 20/2012 and No.194/2012 and PN 16 42 01 02; Slovenia – Slovenian Research Agency; Spain – Comunidad de Madrid; Fondo Europeo de Desarrollo Regional (FEDER) funds; Ministerio de Economía y Competitividad; Xunta de Galicia; European Community 7th Framework Program Grant No. FP7-PEOPLE-2012-IEF- 328826; USA – Department of Energy, Contracts No. DE-AC02-07CH11359, No. DEFR02-04ER41300, No. DE-FG02-99ER41107 and No. DE-SC0011689; National Science Foundation, Grant No. 0450696; The Grainger Foundation; Marie CurieIRSES/EPLANET; European Particle Physics Latin American Network; European Union 7th Framework Program, Grant No. PIRSES-2009-GA-246806; European Union’s Horizon 2020 research and innovation programme (Grant No. 646623); and UNESCO.es_ES
dc.description.abstractCosmic 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 3×104 cosmic rays above 8×1018 electron volts, recorded with the Pierre Auger Observatory from a total exposure of 76,800 square kilometers steradian year, we report an anisotropy in the arrival directions. The anisotropy, detected at more than the 5.2σ level of significance, can be described by a dipole with an amplitude of 6.5+1.3−0.9% towards right ascension αd=100±10 degrees and declination δd=−24+12−13 degrees. That direction indicates an extragalactic origin for these ultra-high energy particles.es_ES
dc.language.isoenges_ES
dc.publisherAmerican Association for the Advancement of Sciencees_ES
dc.rightsAtribución-CompartirIgual 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-sa/3.0/es/*
dc.titleObservation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 1018 eVes_ES
dc.typejournal articlees_ES
dc.relation.projectIDFP7-PEOPLE-2012-IEF- 328826es_ES
dc.relation.projectIDFP7/PIRSES-2009-GA-246806es_ES
dc.relation.projectIDEU/H2020/646623es_ES
dc.rights.accessRightsopen accesses_ES
dc.relation.publisherversionAab, A., Abreu, P., Aglietta, M., Al Samarai, I., Albuquerque, I. F. M., Allekotte, I., ... & Anchordoqui, L. (2017). Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8× 1018 eV. Science, 357(6357), 1266-1270 DOI: 10.1126/science.aan4338
dc.identifier.doi10.1126/science.aan4338
dc.type.hasVersionSMURes_ES


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