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Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory

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dc.contributor.authorArganda, E.
dc.contributor.authorArqueros Martínez, Fernando
dc.contributor.authorBlanco Ramos, Francisco
dc.contributor.authorGarcía Pinto, Diego
dc.contributor.authorOrtiz Ramis, Montserrat
dc.contributor.authorRosado Vélez, Jaime
dc.contributor.authorVázquez Peñas, José Ramón
dc.date.accessioned2023-06-20T04:15:03Z
dc.date.available2023-06-20T04:15:03Z
dc.date.issued2011-06
dc.description© 2011 IOP Publishing Ltd and SISSA. Artículo firmado por más de 10 autores (The Pierre Auger Collaboration). We are very grateful to the following agencies and organizations for financial support: Comision Nacional de Energia Atomica, Fundacion Antorchas, Gobierno De La Provincia de Mendoza, Municipalidad de Malargue, NDM Holdings and Valle Las Lenas, in gratitude for their continuing cooperation over land access, Argentina; the Australian Research Council; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Ministerio de Ciencia e Tecnologia (MCT), Brazil; AVCR, AV0Z10100502 and AV0Z10100522, GAAV KJB300100801 and KJB100100904, MSMT-CR LA08016, LC527, 1M06002, and MSM0021620859, Czech Republic; Centre de Cal-cul IN2P3/CNRS, Centre National de la Recherche Scientifique (CNRS), Conseil Regional Ile-de-France, Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), Departement Sciences de l'Univers (SDU-INSU/CNRS), France; Bundesministerium fur Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Wurttemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium fur Wissenschaft rind Forschung, Nordrhein-Westfalen, Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nuclear (INFN), Istituto Nazionale di Astrofisica (INAF), Minister dell'Istruzione, dell'Universita e della Ricerca (MIUR), Gran Sasso Center for Astroparticle Physics (CFA), Italy; Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie an Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Grant Nos. 1 P03 D 014 30 and N N202 207238, Poland; Fundacao para a Ciencia e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad de Madrid, Consejeria de Educacion de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Ciencia e Innovacion and Consolider-Ingenio 2010 (CPAN), Generalitat Valenciana, Junta de Andalucia, Xunta de Galicia, Spain; Science and Technology Facilities Council, United Kingdom; Department of Energy, Contract Nos. DE-AC02-07CH11359, DE-FR02-04ER41300, National Science Foundation, Grant No. 0969100, The Grainger Foundation USA; NAFOSTED, Vietnam; ALFA-EC / HELEN, European Union 6th Framework Program, Grant No. MEIF-CT-2005-025057, European Union 7th Framework Program, Grant No. PIEF-GA-2008-220240 and UNESCO.
dc.description.abstractThe Pierre Auger Collaboration has reported. evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies E > E-th = 5.5 x 10(19) eV. These show a correlation with the distribution of nearby extragalactic objects, including an apparent excess around the direction of Centaurus A. If the particles responsible for these excesses at E > E-th are heavy nuclei with charge Z, the proton component of the sources should lead to excesses in the same regions at energies E/Z. We here report the lack of anisotropies in these directions at energies above E-th/Z (for illustrative values of Z = 6, 13, 26). If the anisotropies above E-th are due to nuclei with charge Z, and under reasonable assumptions about the acceleration process, these observations imply stringent constraints on the allowed proton fraction at the lower energies.
dc.description.departmentDepto. de Estructura de la Materia, Física Térmica y Electrónica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipUnión Europea. FP7
dc.description.sponsorshipMinisterio de Ciencia e Innovacion and Consolider-Ingenio (CPAN)
dc.description.sponsorshipAVCR, Czech Republic
dc.description.sponsorshipCentre de Calcul
dc.description.sponsorshipCentre National de la Recherche Scientifique (CNRS)
dc.description.sponsorshipConseil Regional Ile-de-France, Departement Physique Nucleaire et Corpusculaire, (PNC-IN2P3/CNRS)
dc.description.sponsorshipDepartement Sciences de l'Univers (SDU-INSU/CNRS), France
dc.description.sponsorshipBundesministerium fur Bildung und Forschung (BMBF)
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (DFG)
dc.description.sponsorshipFinanzministerium Baden-Wurttemberg
dc.description.sponsorshipHelmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)
dc.description.sponsorshipMinisterium fur Wissenschaft rind Forschung Nordrhein-Westfalen
dc.description.sponsorshipMinisterium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany
dc.description.sponsorshipIstituto Nazionale di Fisica Nuclear (INFN)
dc.description.sponsorshipIstituto Nazionale di Astrofisica (INAF)
dc.description.sponsorshipMinister dell'Istruzione, dell'Universita e della Ricerca (MIUR)
dc.description.sponsorshipGran Sasso Center for Astroparticle Physics (CFA), Italy
dc.description.sponsorshipMinisterie an Onderwijs, Cultuur en Wetenschap
dc.description.sponsorshipNederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
dc.description.sponsorshipStichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands
dc.description.sponsorshipMinistry of Science and Higher Education, Poland
dc.description.sponsorshipFundacao para a Ciencia e a Tecnologia, Portugal
dc.description.sponsorshipMinistry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipConsejeria de Educacion de la Comunidad de Castilla La Mancha
dc.description.sponsorshipFEDER funds
dc.description.sponsorshipGeneralitat Valenciana
dc.description.sponsorshipJunta de Andalucia
dc.description.sponsorshipXunta de Galicia, Spain
dc.description.sponsorshipScience and Technology Facilities Council, United Kingdom
dc.description.sponsorshipDepartment of Energy
dc.description.sponsorshipALFA-EC / HELEN
dc.description.sponsorshipUnión Europea. FP6
dc.description.sponsorshipUNESCO
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/38370
dc.identifier.doi10.1088/1475-7516/2011/06/022
dc.identifier.issn1475-7516
dc.identifier.officialurlhttp://dx.doi.org/10.1088/1475-7516/2011/06/022
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.relatedurlhttp://arxiv.org/abs/1106.3048
dc.identifier.urihttps://hdl.handle.net/20.500.14352/45091
dc.issue.number6
dc.journal.titleJournal of cosmology and astroparticle physics
dc.language.isoeng
dc.publisherIop Publishing
dc.relation.projectIDAUGERCRSOURCE (220240)
dc.relation.projectIDAV0Z10100502
dc.relation.projectIDAV0Z10100522
dc.relation.projectIDGAAV KJB300100801
dc.relation.projectIDKJB100100904
dc.relation.projectIDMSMT-CR LA08016
dc.relation.projectIDLC527
dc.relation.projectID1M06002
dc.relation.projectIDMSM0021620859
dc.relation.projectIDIN2P3/CNRS
dc.relation.projectIDPNC-IN2P3/CNRS
dc.relation.projectID1 P03 D 014 30
dc.relation.projectIDN N202 207238
dc.relation.projectIDDE-AC02-07CH11359
dc.relation.projectIDDE-FR02-04ER41300
dc.relation.projectIDMEIF-CT-2005-025057
dc.rights.accessRightsopen access
dc.subject.cdu539.1
dc.subject.keywordActive galactic nuclei
dc.subject.keywordSpectrum
dc.subject.keywordDetector.
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleAnisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory
dc.typejournal article
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