RT Journal Article
T1 A search for point sources of EeV neutrons
A1 Arganda, E.
A1 Arqueros Martínez, Fernando
A1 Blanco Ramos, Francisco
A1 García Pinto, Diego
A1 Minaya Flores, Ignacio Andrés
A1 Ortiz Ramis, Montserrat
A1 Rosado Vélez, Jaime
A1 Vázquez Peñas, José Ramón
AB A thorough search of the sky exposed at the Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess of events in any small solid angle that would be indicative of a flux of neutral particles from a discrete source. The search covers from -90 degrees to +15 degrees in declination using four different energy ranges above 1 EeV (10(18) eV). The method used in this search is more sensitive to neutrons than to photons. The upper limit on a neutron flux is derived for a dense grid of directions for each of the four energy ranges. These results constrain scenarios for the production of ultrahigh energy cosmic rays in the Galaxy.
PB IOP publishing ltd
SN 0004-637X
YR 2012
FD 2012-12-01
LK https://hdl.handle.net/20.500.14352/44720
UL https://hdl.handle.net/20.500.14352/44720
LA eng
NO © 2012. The American Astronomical Society.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 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 KJB100100904, MSMT-CR LA08016, LG11044, LC527, 1M06002, MSM0021620859 and RCPTM-CZ. 1.05/2.1.00/03.0058, 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 und Kunst, Baden-Wurttemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), 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; Ministry of Science and Higher Education, grant Nos. N N202 200239 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), 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. 0450696, The Grainger Foundation, USA; 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.
NO Unión Europea. FP7
NO AVCR, Czech Republic
NO GAAV, Czech Republic
NO MSMT-CR, Czech Republic
NO RCPTM,  Czech Republic
NO Centre de Calcul IN2P3/CNRS, France
NO Centre National de la Recherche Scientifique (CNRS), France
NO Conseil Regional Ile-de-France, France
NO Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), France
NO Departement Sciences de l'Univers (SDU-INSU/CNRS), France
NO Bundesministerium fur Bildung und Forschung (BMBF), Germany
NO Deutsche Forschungsgemeinschaft (DFG), Germany
NO Finanzministerium Baden-Wurttemberg, Germany
NO Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany
NO Ministerium fur Wissenschaft und Forschung, Nordrhein-Westfalen, Germany
NO Ministerium fur Wissenschaft, Forschung, Kunst Baden-Wurttemberg, Germany
NO Istituto Nazionale di Fisica Nucleare (INFN)
NO Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy
NO Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
NO Stichting voor Fundamenteel Onderzoek der Materie (FOM), The Netherlands
NO Ministry of Science and Higher Education, Poland
NO Fundacao para a Ciencia e a Tecnologia, Portugal
NO Ministry for Higher Education, Science, and Technology, Slovenia
NO Slovenian Research Agency, Slovenia
NO Comunidad de Madrid, Spain
NO Consejeria de Educacion de la Comunidad de Castilla La Mancha, Spain
NO FEDER funds, Spain
NO Ministerio de Ciencia e Innovación  and Consolider-Ingenio 2010 (CPAN), Spain
NO Xunta de Galicia, Spain
NO ALFA-EC/HELEN
NO Science and Technology Facilities Council, United Kingdom
NO European Union 6th Framework Program
NO UNESCO
DS Docta Complutense
RD 9 abr 2025