An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2007 |
| Outros Autores: | , , |
| Tipo de documento: | Artigo |
| Título da fonte: | Repositório da Produção Científica e Intelectual da Unicamp |
| Texto Completo: | https://hdl.handle.net/20.500.12733/1666237 |
Resumo: | Agradecimentos: We are very grateful to the following agencies and organisations for financial support: Gobierno de Mendoza, Comisión Nacional de Energia Atómica y Municipalidad de Malargüe, Argentina; the Australian Research Council; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro, Brasil; National Science Foundation of China; Ministry of Education of the Czech Republic (projects LA134 and LN00A006); Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et Physique des Particules (IN2P3/CNRS), Institut National des Sciences de l’Univers (INSU/CNRS) et Conseil Régional Ile de France, France; German Ministry for Education and Research and Forschungszentrum Karlsruhe, Germany; Istituto Nazionale di Fisica Nucleare, Italy; Consejo Nacional de Ciencia y Tecnologia, Mexico; the Polish State Committee for Scientific Research (grant numbers 1P03D 01430, 2P03B 11024 and 2PO3D 01124), Poland; Slovenian Research Agency; Ministerio de Educación y Ciencia (FPA2003-08733-C02, 2004-01198), Xunta de Galicia (2003 PXIC20612PN, 2005 PXIC20604PN) and Feder Funds, Spain; Particle Physics and Astronomy Research Council, UK; the US Department of Energy, the US National Science Foundation, USA, and UNESCO. Partial support of ALFA-EC funds, in the framework of the HELEN Project, is gratefully acknowledged |
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An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger ObservatoryRaios cósmicosChuveiros de raios cósmicosDetectoresObservatório Pierre AugerPierre Auger ObservatoryCosmic raysCosmic ray showersDetectorsUltra-high energy photonsExtensive air showersArtigo originalAgradecimentos: We are very grateful to the following agencies and organisations for financial support: Gobierno de Mendoza, Comisión Nacional de Energia Atómica y Municipalidad de Malargüe, Argentina; the Australian Research Council; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro, Brasil; National Science Foundation of China; Ministry of Education of the Czech Republic (projects LA134 and LN00A006); Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et Physique des Particules (IN2P3/CNRS), Institut National des Sciences de l’Univers (INSU/CNRS) et Conseil Régional Ile de France, France; German Ministry for Education and Research and Forschungszentrum Karlsruhe, Germany; Istituto Nazionale di Fisica Nucleare, Italy; Consejo Nacional de Ciencia y Tecnologia, Mexico; the Polish State Committee for Scientific Research (grant numbers 1P03D 01430, 2P03B 11024 and 2PO3D 01124), Poland; Slovenian Research Agency; Ministerio de Educación y Ciencia (FPA2003-08733-C02, 2004-01198), Xunta de Galicia (2003 PXIC20612PN, 2005 PXIC20604PN) and Feder Funds, Spain; Particle Physics and Astronomy Research Council, UK; the US Department of Energy, the US National Science Foundation, USA, and UNESCO. Partial support of ALFA-EC funds, in the framework of the HELEN Project, is gratefully acknowledgedAbstract: An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 10(19) eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favoredFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQFUNDAÇÃO CARLOS CHAGAS FILHO DE AMPARO À PESQUISA DO ESTADO DO RIO DE JANEIRO - FAPERJFechadoUNIVERSIDADE ESTADUAL DE CAMPINASMüller, Márcio Aparecido, 1975-Nogima, Hélio, 1963-Prado Junior, Luís, 1969-Peixoto, Carlos José Todero, 1974-2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.12733/1666237MÜLLER, Márcio Aparecido et al. An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory. Astroparticle physics. Amsterdam : Elsevier, 2007. Vol. 27, n. 2/3 (Mar., 2007), p. 155-168. Disponível em: https://hdl.handle.net/20.500.12733/1666237. Acesso em: 24 mai. 2023.Inglêshttps://repositorio.unicamp.br/acervo/detalhe/1218738reponame:Repositório da Produção Científica e Intelectual da Unicampinstname:Universidade Estadual de Campinas (UNICAMP)instacron:UNICAMPinfo:eu-repo/semantics/openAccess2022-09-02T09:10:24Zoai:https://www.repositorio.unicamp.br/:1218738Repositório InstitucionalPUBhttp://repositorio.unicamp.br/oai/requestreposip@unicamp.bropendoar:2022-09-02T09:10:24Repositório da Produção Científica e Intelectual da Unicamp - Universidade Estadual de Campinas (UNICAMP)false |
| dc.title.none.fl_str_mv |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| title |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| spellingShingle |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory Müller, Márcio Aparecido, 1975- Raios cósmicos Chuveiros de raios cósmicos Detectores Observatório Pierre Auger Pierre Auger Observatory Cosmic rays Cosmic ray showers Detectors Ultra-high energy photons Extensive air showers Artigo original |
| title_short |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| title_full |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| title_fullStr |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| title_full_unstemmed |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| title_sort |
An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory |
| author |
Müller, Márcio Aparecido, 1975- |
| author_facet |
Müller, Márcio Aparecido, 1975- Nogima, Hélio, 1963- Prado Junior, Luís, 1969- Peixoto, Carlos José Todero, 1974- |
| author_role |
author |
| author2 |
Nogima, Hélio, 1963- Prado Junior, Luís, 1969- Peixoto, Carlos José Todero, 1974- |
| author2_role |
author author author |
| dc.contributor.none.fl_str_mv |
UNIVERSIDADE ESTADUAL DE CAMPINAS |
| dc.contributor.author.fl_str_mv |
Müller, Márcio Aparecido, 1975- Nogima, Hélio, 1963- Prado Junior, Luís, 1969- Peixoto, Carlos José Todero, 1974- |
| dc.subject.por.fl_str_mv |
Raios cósmicos Chuveiros de raios cósmicos Detectores Observatório Pierre Auger Pierre Auger Observatory Cosmic rays Cosmic ray showers Detectors Ultra-high energy photons Extensive air showers Artigo original |
| topic |
Raios cósmicos Chuveiros de raios cósmicos Detectores Observatório Pierre Auger Pierre Auger Observatory Cosmic rays Cosmic ray showers Detectors Ultra-high energy photons Extensive air showers Artigo original |
| description |
Agradecimentos: We are very grateful to the following agencies and organisations for financial support: Gobierno de Mendoza, Comisión Nacional de Energia Atómica y Municipalidad de Malargüe, Argentina; the Australian Research Council; Fundacao de Amparo a Pesquisa do Estado de Sao Paulo, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro, Brasil; National Science Foundation of China; Ministry of Education of the Czech Republic (projects LA134 and LN00A006); Centre National de la Recherche Scientifique, Institut National de Physique Nucléaire et Physique des Particules (IN2P3/CNRS), Institut National des Sciences de l’Univers (INSU/CNRS) et Conseil Régional Ile de France, France; German Ministry for Education and Research and Forschungszentrum Karlsruhe, Germany; Istituto Nazionale di Fisica Nucleare, Italy; Consejo Nacional de Ciencia y Tecnologia, Mexico; the Polish State Committee for Scientific Research (grant numbers 1P03D 01430, 2P03B 11024 and 2PO3D 01124), Poland; Slovenian Research Agency; Ministerio de Educación y Ciencia (FPA2003-08733-C02, 2004-01198), Xunta de Galicia (2003 PXIC20612PN, 2005 PXIC20604PN) and Feder Funds, Spain; Particle Physics and Astronomy Research Council, UK; the US Department of Energy, the US National Science Foundation, USA, and UNESCO. Partial support of ALFA-EC funds, in the framework of the HELEN Project, is gratefully acknowledged |
| publishDate |
2007 |
| dc.date.none.fl_str_mv |
2007 |
| dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
| dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/20.500.12733/1666237 MÜLLER, Márcio Aparecido et al. An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory. Astroparticle physics. Amsterdam : Elsevier, 2007. Vol. 27, n. 2/3 (Mar., 2007), p. 155-168. Disponível em: https://hdl.handle.net/20.500.12733/1666237. Acesso em: 24 mai. 2023. |
| url |
https://hdl.handle.net/20.500.12733/1666237 |
| identifier_str_mv |
MÜLLER, Márcio Aparecido et al. An upper limit to the photon fraction in cosmic rays above 10(19) eV from the Pierre Auger Observatory. Astroparticle physics. Amsterdam : Elsevier, 2007. Vol. 27, n. 2/3 (Mar., 2007), p. 155-168. Disponível em: https://hdl.handle.net/20.500.12733/1666237. Acesso em: 24 mai. 2023. |
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Inglês |
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Inglês |
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https://repositorio.unicamp.br/acervo/detalhe/1218738 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Repositório da Produção Científica e Intelectual da Unicamp |
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Repositório da Produção Científica e Intelectual da Unicamp - Universidade Estadual de Campinas (UNICAMP) |
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reposip@unicamp.br |
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