Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos

Multitudinario:510

doi:10.1088/2041-8205/755/1/L4

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Multitudinario:510 "Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos" (2012) Astrophysical Journal Letters. 755(1)

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Abstract:

The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy E ν between 10 17 eV and 10 20 eV from point-like sources across the sky south of +55° and north of -65° declinations. A search has been performed for highly inclined extensive air showers produced by the interaction of neutrinos of all flavors in the atmosphere (downward-going neutrinos), and by the decay of tau leptons originating from tau neutrino interactions in Earth's crust (Earth-skimming neutrinos). No candidate neutrinos have been found in data up to 2010 May 31. This corresponds to an equivalent exposure of ∼3.5years of a full surface detector array for the Earth-skimming channel and ∼2 years for the downward-going channel. An improved upper limit on the diffuse flux of tau neutrinos has been derived. Upper limits on the neutrino flux from point-like sources have been derived as a function of the source declination. Assuming a differential neutrino flux k PS E -2 ν from a point-like source, 90% confidence level upper limits for k PS at the level of ≈5 × 10 -7 and 2.5 × 10 -6 GeV cm -2 s -1 have been obtained over a broad range of declinations from the searches for Earth-skimming and downward-going neutrinos, respectively. © 2012 The American Astronomical Society. All rights reserved.

Registro:

Documento:	Artículo
Título:	Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos
Autor:	Multitudinario:510
Filiación:	Observatorio Pierre Auger, Av. San Mart́in Norte 304, 5613 Malargüe, Argentina LIP, Instituto Superior Técnico, Technical University of Lisbon, Portugal Istituto di Fisica Dello Spazio Interplanetario (INAF), Università di Torino, Sezione INFN, Torino, Italy University of Wisconsin, Madison, WI, United States Fermilab, Batavia, IL, United States Universidade de São Paulo, Instituto de F́isica, São Paulo, Brazil Laboratoire AstroParticule et Cosmologie (APC), Université Paris 7, CNRS-IN2P3, Paris, France Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina New York University, New York, NY, United States Ohio State University, Columbus, OH, United States Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Buenos Aires, Argentina Instituto de Tecnoloǵias en Detección y Astropart́ iculas (CNEA, CONICET, UNSAM), Buenos Aires, Argentina Universidad Nacional Autonoma de Mexico, Mexico, D.F., Mexico Universidad de Santiago de Compostela, Spain Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil Università di Napoli Federico II, Sezione INFN, Napoli, Italy IMAPP, Radboud University Nijmegen, Netherlands University of Wisconsin, Milwaukee, WI, United States Rudjer Boškovi'c Institute, 10000 Zagreb, Croatia IFLP, Universidad Nacional de la Plata, CONICET, La Plata, Argentina Universidad Complutense de Madrid, Madrid, Spain Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France Karlsruhe Institute of Technology, Campus South - Institut für Experimentelle Kernphysik (IEKP), Karlsruhe, Germany Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier, INPG, Grenoble, France Observatorio Pierre Auger, Comisión Nacional de Enerǵia Atómica, Malargüe, Argentina University Politehnica of Bucharest, Romania Karlsruhe Institute of Technology, Campus North - Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany University of Adelaide, Adelaide, SA, Australia Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, Brazil Laboratoire de Laccélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, France Universidade Estadual Do Sudoeste da Bahia, Vitoria da Conquista, BA, Brazil Karlsruhe Institute of Technology, Campus North - Institut für Kernphysik, Karlsruhe, Germany Bergische Universität Wuppertal, Wuppertal, Germany SUBATECH, Ecole des Mines de Nantes, Université de Nantes, France Max-Planck-Institut für Radioastronomie, Bonn, Germany Universidad de Alcalá, Alcalá de Henares (Madrid), Spain Institute of Physics of the Academy of Sciences of the Czech Republic, Prague, Czech Republic Università di Roma II Tor Vergata, Sezione INFN, Roma, Italy Universidade Federal Do Rio de Janeiro, Instituto de F́isica, Rio de Janeiro, RJ, Brazil Institute of Nuclear Physics PAN, Krakow, Poland Colorado State University, Fort Collins, CO, United States Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest-Magurele, Romania Colorado State University, Pueblo, CO, United States School of Physics and Astronomy, University of Leeds, United Kingdom Universität Siegen, Siegen, Germany Universidad de Granada, C.A.F.P.E., Granada, Spain Case Western Reserve University, Cleveland, OH, United States Pennsylvania State University, University Park, PA, United States Università di Milano, Sezione INFN, Milan, Italy Università di Catania, Sezione INFN, Catania, Italy Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy Dipartimento di Matematica e Fisica E. de Giorgi, Università Del Salento, Sezione INFN, Lecce, Italy Università di Torino and Sezione INFN, Torino, Italy Michigan Technological University, Houghton, MI, United States Observatorio Pierre Auger, Malargüe, Argentina Nikhef, Science Park, Amsterdam, Netherlands Enrico Fermi Institute, University of Chicago, Chicago, IL, United States Instituto de Astronomía y Física Del Espacio (CONICET-UBA), Buenos Aires, Argentina Departamento de Física, FCEyN, Universidad de Buenos Aires y CONICET, Argentina Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina Universidade de São Paulo, Instituto de Física, São Carlos, SP, Brazil Kernfysisch Versneller Instituut, University of Groningen, Groningen, Netherlands Institut de Physique Nucléaire DOrsay (IPNO), Université Paris 11, CNRS-IN2P3, Orsay, France Università DellAquila, INFN, LAquila, Italy Institute for Nuclear Science and Technology (INST), Hanoi, Viet Nam RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany ASTRON, Dwingeloo, Netherlands J. Stefan Institute, Ljubljana, Slovenia Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia Dipartimento di Fisica, Università and INFN, Genova, Italy University of Łódź, Łódź, Poland University of New Mexico, Albuquerque, NM, United States INFN, Laboratori Nazionali Del Gran Sasso, Assergi (LAquila), Italy Universidade Estadual de Feira de Santana, Brazil Palacky University, RCPTM, Olomouc, Czech Republic Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Charles University, Prague, Czech Republic Louisiana State University, Baton Rouge, LA, United States Universität Hamburg, Hamburg, Germany Universidade Federal Do ABC, Santo André, SP, Brazil Benemérita Universidad Autónoma de Puebla, Puebla, Mexico Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Michoacan, Mexico Centro de Investigación y de Estudios Avanzados Del IPN (CINVESTAV), México, Mexico Southern University, Baton Rouge, LA, United States Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford, United Kingdom University of Hawaii, Honolulu, HI, United States Instituto de F́isica de Rosario (IFIR) - CONICET/U.N.R., Facultad de Ciencias Bioqúimicas y Farmacéuticas U.N.R., Rosario, Argentina Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF, CONICET, Argentina Instituto de F́isica Corpuscular, CSIC-Universitat de València, Valencia, Spain Northeastern University, Boston, MA, United States Universidade Federal da Bahia, Salvador, BA, Brazil University of Nebraska, Lincoln, NE, United States Colorado School of Mines, Golden, CO, United States Physics Department, University of Bucharest, Romania Argonne National Laboratory, Argonne, IL, United States Los Alamos National Laboratory, Los Alamos, NM, United States University of Maryland, United States Institut de Física DAltes Energies, Bellaterra, Spain Universit́e de Lausanne, Switzerland Konan University, Kobe, Japan NYU Abu Dhabi, United Arab Emirates Universidad Autonoma de Chiapas, Cinvestav, Mexico
Palabras clave:	astroparticle physics; cosmic rays; neutrinos; telescopes
Año:	2012
Volumen:	755
Número:	1
DOI:	http://dx.doi.org/10.1088/2041-8205/755/1/L4
Título revista:	Astrophysical Journal Letters
Título revista abreviado:	Astrophys. J. Lett.
ISSN:	20418205
Registro:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v755_n1_p_Multitudinario

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Citas:

---------- APA ----------

(2012) . Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos. Astrophysical Journal Letters, 755(1).
http://dx.doi.org/10.1088/2041-8205/755/1/L4

---------- CHICAGO ----------

Multitudinario:510. "Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos" . Astrophysical Journal Letters 755, no. 1 (2012).
http://dx.doi.org/10.1088/2041-8205/755/1/L4

---------- MLA ----------

Multitudinario:510. "Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos" . Astrophysical Journal Letters, vol. 755, no. 1, 2012.
http://dx.doi.org/10.1088/2041-8205/755/1/L4

---------- VANCOUVER ----------

Multitudinario:510. Search for point-like sources of ultra-high energy neutrinos at the Pierre Auger Observatory and improved limit on the diffuse flux of tau neutrinos. Astrophys. J. Lett. 2012;755(1).
http://dx.doi.org/10.1088/2041-8205/755/1/L4