Autor(es):
Chinellato, José Augusto, 1950- ; Almeida, Rogerio Menezes de, 1980- ; Mello Junior, Walter José Medeiros de, 1971- ; Chinellato, Carola Dobrigkeit, 1952- ; Escobar, Carlos Ourivio, 1948- ; Fauth, Anderson Campos, 1957- ; Kemp, Ernesto, 1965- ; Müller, Márcio Aparecido, 1975- ; Selmi-Dei, Daniel Pakk, 1978- ; Takahashi, Jun, 1971- ; Peixoto, Carlos José Todero, 1974-
Data: 2007
Identificador Persistente: https://hdl.handle.net/20.500.12733/1666292
Origem: Oasisbr
Assunto(s): Raios cósmicos; Chuveiros de raios cósmicos; Detectores; Cosmic rays; Cosmic ray showers; Detectors; Artigo original; Raios cósmicos; Raios cósmicos; Chuveiros de raios cósmicos; Chuveiros de raios cósmicos; Detectores; Detectores; Cosmic rays; Cosmic rays; Cosmic ray showers; Cosmic ray showers; Detectors; Detectors; Artigo original; Artigo original
Descrição
Agradecimentos: We are grateful to the following agencies and organizations for financial support: Gobierno De La Provincia de Mendoza, Comisión Nacional de Energía Atómica, Municipalidad de Malargüe, Fundación Antorchas, Argentina; the Australian Research Council; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudos e Projetos do Ministério da Ciência e Tecnologia (FINEP/MCT), Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro (FAPERJ), Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Brazil; Ministry of Education, Youth and Sports of the Czech Republic; Centre National de la Recherche Scientifique (CNRS), Conseil Régional Ile-de-France, Département Physique Nucléaire et Corpusculaire (PNC-IN2P3/CNRS), Département Sciences de l’Univers (SDU-INSU/CNRS), France; Bundesministerium für Bildung und Forschung (BMBF), Deutsche Forschungsgemeinschaft (DFG), Finanzministerium Baden-Württemberg, Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Ministerium für Wissenschaft und Forschung, Nordrhein Westfalen, Ministerium für Wissenschaft, Forschung und Kunst, Baden-Württemberg, Germany; Istituto Nazionale di Fisica Nucleare (INFN), Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR), Italy; Consejo Nacional de Ciencia y Tecnología (CONACYT), Mexico; Ministerie van Onderwijs, Cultuur en Wetenschap, Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands; Ministry of Science and Higher Education, Poland; Fundação para a Ciência e a Tecnologia, Portugal; Ministry for Higher Education, Science, and Technology, Slovenian Research Agency, Slovenia; Comunidad de Madrid, Consejería de Educacíon de la Comunidad de Castilla La Mancha, FEDER funds, Ministerio de Educacíon y Ciencia, Xunta de Galicia, Spain; Science and TechnologyFacilities Council, UK; Department of Energy, National Science Foundation, The Grainger Foundation, USA; América Latina Formación Académica-European Community/High Energy Physics Latin-American European Network, and UNESCO
Abstract: Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 10(19) electron volts and the positions of active galactic nuclei (AGN) lying within similar to 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
FINANCIADORA DE ESTUDOS E PROJETOS - FINEP
FUNDAÇÃO CARLOS CHAGAS FILHO DE AMPARO À PESQUISA DO ESTADO DO RIO DE JANEIRO - FAPERJ
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP
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