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A search for point sources of EeV photons

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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, Monserrat
dc.contributor.authorRosado Vélez, Jaime
dc.contributor.authorVázquez Peñas, José Ramón
dc.date.accessioned2023-06-19T14:55:24Z
dc.date.available2023-06-19T14:55:24Z
dc.date.issued2014-07-10
dc.description©2014. The American Astronomical Society. All rights reserved. Autoría conjunta: Pierre Auger Collaboration. Artículo firmado por mas 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 Amparoa 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 1417501S, 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 Westfalen, Ministerium fur Wissenschaft, Forschung undKunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universit` a 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), 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 and 2013/08/M/ST9/00728, 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, UK; 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.abstractMeasurements of air showers made using the hybrid technique developed with the fluorescence and surface detectors of the Pierre Auger Observatory allow a sensitive search for point sources of EeV photons anywhere in the exposed sky. A multivariate analysis reduces the background of hadronic cosmic rays. The search is sensitive to a declination band from -85 degrees to +20 degrees, in an energy range from 10(17.3) eV to 10(18.5) eV. No photon point source has been detected. An upper limit on the photon flux has been derived for every direction. The mean value of the energy flux limit that results from this, assuming a photon spectral index of -2, is 0.06 eV cm(-2) s(-1), and no celestial direction exceeds 0.25 eV cm(-2) s(-1). These upper limits constrain scenarios in which EeV cosmic ray protons are emitted by non-transient 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
dc.description.sponsorshipDepartement 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 Westfalen
dc.description.sponsorshipMinisterium fur Wissenschaft, Forschung undKunst, Baden-Wurttemberg
dc.description.sponsorshipIstituto Nazionale di Fisica Nucleare (INFN)
dc.description.sponsorshipMinistero dell'Istruzione, dell'Universit` a e della Ricerca (MIUR)
dc.description.sponsorshipGran Sasso Center for Astroparticle Physics (CFA)
dc.description.sponsorshipCETEMPS Center of Excellence
dc.description.sponsorshipMinisterie van Onderwijs, Cultuur en Wetenschap, Netherlands
dc.description.sponsorshipStichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands
dc.description.sponsorshipNational Centre for Research and Development, Poland;
dc.description.sponsorshipNational Science Centre, Poland
dc.description.sponsorshipPortuguese national funds
dc.description.sponsorshipFEDER funds within COMPETE - Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia
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.sponsorshipMinisterio de Educacion y Ciencia, Spain
dc.description.sponsorshipXunta de Galicia, Spain
dc.description.sponsorshipThe Leverhulme Foundation, Science and Technology Facilities Council
dc.description.sponsorshipUNESCO
dc.description.sponsorshipNederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/31449
dc.identifier.doi10.1088/0004-637X/789/2/160
dc.identifier.issn0004-637X
dc.identifier.officialurlhttp://dx.doi.org/10.1088/0004-637X/789/2/160
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/34792
dc.issue.number2
dc.journal.titleAstrophysical journal
dc.language.isoeng
dc.publisherIOP Publishing LTD
dc.relation.projectIDPIRSES-2009-GA (2468069
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.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.keywordEnergy cosmic-rays
dc.subject.keywordGamma-rays
dc.subject.keywordGalactic-center
dc.subject.keywordAstronomy
dc.subject.keywordFramework
dc.subject.keywordSpectrum
dc.subject.ucmFísica nuclear
dc.subject.unesco2207 Física Atómica y Nuclear
dc.titleA search for point sources of EeV photons
dc.typejournal article
dc.volume.number789
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