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A targeted search for point sources of eev neutrons

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dc.contributor.authorArqueros Martínez, Fernando
dc.contributor.authorBlanco Ramos, Francisco
dc.contributor.authorGarcía Pinto, Diego
dc.contributor.authorMinaya Flores, Ignacio Andrés
dc.contributor.authorOrtiz Ramis, Montserrat
dc.contributor.authorRosado Vélez, Jaime
dc.contributor.authorVázquez Peñas, José Ramón
dc.date.accessioned2023-06-19T14:55:23Z
dc.date.available2023-06-19T14:55:23Z
dc.date.issued2014-06-02
dc.description© IOP Publishing 2014. Autoría conjunta: Pierre Auger Collaboration. Artículo firmado por más de 400 autores. 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), Sao Paulo Research Foundation (FAPESP) grant Nos. 2010/07359-6, 1999/05404-3, Ministerio de Ciencia e Tecnologia (MCT), Brazil; MSMT-CR LG13007, 7AMB14AR005, CZ.1.05/2.1.00/03.0058 and the Czech Science Foundation grant 14-17501S, Czech Republic; Centre de Calcul 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 und Forschung, Nordrhein West-falen, Ministerium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Gran Sasso Center for Astroparticle Physics (CFA), CETEMPS Center of Excellence, Italy; Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), The Netherlands; National Centre for Research and Development, grant Nos. ERA-NET-ASPERA/01/11 and ERA-NET-ASPERA/02/11, National Science Centre, Grant Nos. 2013/08/M/ST9/00322, 2013/08/M/ST9/00728, and 2013/10/M/ST9/00062, Poland; Portuguese national funds and FEDER funds within COMPETE-Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia, Portugal; Romanian Authority for Scientific Research ANCS, CNDI-UEFISCDI partnership projects nr. 20/2012 and nr. 194/2012, project nr. 1/ASPERA2/2012 ERA-NET, PN-II-RU-PD-2011-3-0145-17, and PN-II-RU-PD-2011-3-0062, the Minister of National Education, Programme for research-Space Technology and Advanced Research-STAR, project number 83/2013, Romania; Slovenian Research Agency, Slovenia; Comunidad de Madrid, FEDER funds, Ministerio de Educacion y Ciencia, Xunta de Galicia, Spain; The Leverhulme Foundation, Science and Technology Facilities Council, United Kingdom; Department of Energy, Contract No. DE-AC02-07CH11359, DE-FR02-04ER41300, and DE-FG02-99ER41107, National Science Foundation, grant No. 0450696, The Grainger Foundation, USA; NAFOSTED, Vietnam; Marie Curie-IRSES/EPLANET, European Particle Physics Latin American Network, European Union 7th Framework Program, grant No. PIRSES-2009-GA-246806; and UNESCO.
dc.description.abstractA flux of neutrons from an astrophysical source in the Galaxy can be detected in the Pierre Auger Observatory as an excess of cosmic-ray air showers arriving from the direction of the source. To avoid the statistical penalty for making many trials, classes of objects are tested in combinations as nine "target sets," in addition to the search for a neutron flux from the Galactic center or from the Galactic plane. Within a target set, each candidate source is weighted in proportion to its electromagnetic flux, its exposure to the Auger Observatory, and its flux attenuation factor due to neutron decay. These searches do not find evidence for a neutron flux from any class of candidate sources. Tabulated results give the combined p-value for each class, with and without the weights, and also the flux upper limit for the most significant candidate source within each class. These limits on fluxes of neutrons significantly constrain models of EeV proton emission from non-transient discrete sources in the Galaxy.
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.sponsorshipCzech Science Foundation
dc.description.sponsorshipCentre de Calcul IN2P3/CNRS
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)
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 und Forschung, Nordrhein West-falen
dc.description.sponsorshipMinisterium fur Wissenschaft, Forschung und Kunst, Baden-Wurttemberg, Germany
dc.description.sponsorshipIstituto Nazionale di Fisica Nucleare (INFN)
dc.description.sponsorshipMinistero dell'Istruzione, dell'Universita e della Ricerca (MIUR)
dc.description.sponsorshipGran Sasso Center for Astroparticle Physics (CFA)
dc.description.sponsorshipCETEMPS Center of Excellence, Italy
dc.description.sponsorshipMinisterie van Onderwijs, Cultuur en Wetenschap
dc.description.sponsorshipNederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
dc.description.sponsorshipStichting voor Fundamenteel Onderzoek der Materie (FOM)
dc.description.sponsorshipThe Netherlands; National Centre for Research and Development
dc.description.sponsorshipNational Science Centre
dc.description.sponsorshipPortuguese national funds and FEDER funds within COMPETE-Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia, Portugal
dc.description.sponsorshipRomanian Authority for Scientific Research ANCS, CNDI-UEFISCDI
dc.description.sponsorshipMinister of National Education, Programme for research-Space Technology and Advanced Research-STAR,
dc.description.sponsorshipSlovenian Research Agency
dc.description.sponsorshipComunidad de Madrid, FEDER funds
dc.description.sponsorshipThe Leverhulme Foundation, Science and Technology Facilities Council, United Kingdom
dc.description.sponsorshipMarie Curie-IRSES/EPLANET
dc.description.sponsorshipUNESCO.
dc.description.sponsorshipMinisterio de Educacion y Ciencia, Spain
dc.description.sponsorshipXunta de Galicia, Spain
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/31441
dc.identifier.doi10.1088/2041-8205/789/2/L34
dc.identifier.issn2041-8205
dc.identifier.officialurlhttp://dx.doi.org/10.1088/2041-8205/789/2/L34
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/34791
dc.issue.number2
dc.journal.titleAstrophysical journal letters
dc.language.isoeng
dc.publisherIOP Publishing
dc.relation.projectIDPIRSES-2009-GA (246806)
dc.relation.projectIDMSMT-CR LG13007
dc.relation.projectIDMSMT-7AMB14AR005
dc.relation.projectIDMSMT-CZ.1.05/2.1.00/03.0058
dc.relation.projectID14-17501S
dc.relation.projectIDERA-NET-ASPERA/01/11
dc.relation.projectIDERA-NET-ASPERA/02/11
dc.relation.projectID2013/08/M/ST9/00322
dc.relation.projectID2013/08/M/ST9/00728
dc.relation.projectID2013/10/M/ST9/00062
dc.relation.projectID20/2012
dc.relation.projectID194/2012
dc.relation.projectID1/ASPERA2/2012 ERA-NET
dc.relation.projectIDPN-II-RU-PD-2011-3-0145-17
dc.relation.projectIDPN-II-RU-PD-2011-3-0062
dc.relation.projectID83/2013
dc.rights.accessRightsopen access
dc.subject.cdu539.1
dc.subject.keywordCosmic-rays
dc.subject.keywordCatalog
dc.subject.keywordOrigin
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleA targeted search for point sources of eev neutrons
dc.typejournal article
dc.volume.number789
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