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Abstract:

We analyze the distribution of arrival directions of ultra-high-energy cosmic rays recorded at the Pierre Auger Observatory in 10 years of operation. The data set, about three times larger than that used in earlier studies, includes arrival directions with zenith angles up to 80°, thus covering from -90°to +45°in declination. After updating the fraction of events correlating with the active galactic nuclei (AGNs) in the Vron-Cetty and Vron catalog, we subject the arrival directions of the data with energies in excess of 40 EeV to different tests for anisotropy. We search for localized excess fluxes, self-clustering of event directions at angular scales up to 30°, and different threshold energies between 40 and 80 EeV. We then look for correlations of cosmic rays with celestial structures both in the Galaxy (the Galactic Center and Galactic Plane) and in the local universe (the Super- Galactic Plane). We also examine their correlation with different populations of nearby extragalactic objects: galaxies in the 2MRS catalog, AGNs detected by Swift-BAT, radio galaxies with jets, and the Centaurus A (Cen A) galaxy. None of the tests show statistically significant evidence of anisotropy. The strongest departures from isotropy (post-trial probability ∼1.4%) are obtained for cosmic rays with E >; 58 EeV in rather large windows around Swift AGNs closer than 130 Mpc and brighter than 10 44 erg s -1 (18° radius), and around the direction of Cen A (15° radius). © 2015. The American Astronomical Society. All rights reserved.

Registro:

Documento: Artículo
Título:Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the pierre auger observatory
Autor:Multitudinario:481
Filiación:Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), San Carlos de Bariloche, Argentina
Centro de Investigaciones en Laseres y Aplicaciones, CITEDEF, CONICET, Argentina
Departamento de Física, FCEyN, CONICET, Argentina
IFLP, Universidad Nacional de la Plata, CONICET, La Plata, Argentina
Instituto de Astronomía y Física Del Espacio (IAFE CONICET-UBA), Buenos Aires, Argentina
Instituto de Física de Rosario (IFIR), CONICET/U.N.R., Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Rosario, Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA CONICET UNSAM), National Technological University, Faculty Mendoza (CONICET/CNEA), Mendoza, Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA CONICET UNSAM), Buenos Aires, Argentina
Observatorio Pierre Auger, Malargüe, Argentina
Observatorio Pierre Auger, Comisión Nacional de Energía Atómica, Malargüe, Argentina
Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Buenos Aires, Argentina
University of Adelaide, Adelaide, SA, Australia
Centro Brasileiro de Pesquisas Fisicas, Rio de Janeiro, RJ, Brazil
Faculdade Independente Do Nordeste, Vitória da Conquista, Brazil
Universidade de Sao Paulo, Escola de Engenharia de Lorena, Lorena, SP, Brazil
Universidade de Sao Paulo, Instituto de Física de Sao Carlos, Sao Carlos, SP, Brazil
Universidade de Sao Paulo, Instituto de Física, Sao Paulo, SP, Brazil
Universidade Estadual de Campinas, IFGW, Campinas, SP, Brazil
Universidade Estadual de Feira de Santana, Brazil
Universidade Federal da Bahia, Salvador, BA, Brazil
Universidade Federal de Pelotas, Pelotas, RS, Brazil
Universidade Federal Do ABC, Santo André, SP, Brazil
Universidade Federal Do Rio de Janeiro, Instituto de Física, Rio de Janeiro, RJ, Brazil
Universidade Federal Fluminense, EEIMVR, Volta Redonda, RJ, Brazil
Rudjer Bošković Institute, Zagreb, 10000, Croatia
Charles University, Faculty of Mathematics and Physics, Institute of Particle and Nuclear Physics, Prague, Czech Republic
Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
Palacky University, RCPTM, Olomouc, Czech Republic
Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris 11, CNRS-IN2P3, France
Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris 11, CNRS-IN2P3, France
Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, Paris, France
Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, France
Station de Radioastronomie de Nancay, Observatoire de Paris, CNRS/INSU, France
SUBATECH, Ecole des Mines de Nantes, Université de Nantes, France
Bergische Universitat Wuppertal, Wuppertal, Germany
Karlsruhe Institute of Technology, Campus South, Institut für Experimentelle Kernphysik (IEKP), Karlsruhe, Germany
Karlsruhe Institute of Technology, Campus North, Institut für Kernphysik, Karlsruhe, Germany
Karlsruhe Institute of Technology, Campus North, Institut für Prozessdatenverarbeitung und Elektronik, Karlsruhe, Germany
Max-Planck-Institut für Radioastronomie, Bonn, Germany
RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
Universitat Hamburg, Hamburg, Germany
Universität Siegen, Siegen, Germany
Universitá di Milano and Sezione INFN, Milan, Italy
Universitá di Napoli Federico II, Sezione INFN, Napoli, Italy
Universitá di Roma II Tor Vergata, Sezione INFN, Rome, Italy
Universitá di Catania, Sezione INFN, Catania, Italy
Universitá di Torino and Sezione INFN, Torino, Italy
Dipartimento di Matematica e Fisicae. de Giorgi, Dell'Universitá Del Salento, Sezione INFN, Lecce, Italy
Dipartimento di Scienze Fisiche e Chimiche, Universitá dell'Aquila, INFN, Italy
Gran Sasso Science Institute (INFN), L'Aquila, Italy
Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo (INAF), Palermo, Italy
INFN, Laboratori Nazionali Del Gran Sasso, Assergi (L'Aquila), Italy
Osservatorio Astrofisico di Torino (INAF), Universitá di Torino, Sezione INFN, Torino, Italy
Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
Centro de Investigación y de Estudios Avanzados Del IPN (CINVESTAV), México, Mexico
Universidad Michoacana de San Nicolas de Hidalgo, Michoacan, Morelia, Mexico
Universidad Nacional Autonoma de Mexico, Mexico, DF, Mexico
IMAPP, Radboud University, Nijmegen, Netherlands
KVI, Center for Advanced Radiation Technology, University of Groningen, Netherlands
Nikhef, Science Park, Amsterdam, Netherlands
ASTRON, Dwingeloo, Netherlands
Institute of Nuclear Physics PAN, Krakow, Poland
University of Łódź, Łódź, Poland
Laboratório de Instrumentacao e Física Experimental de Partículas-LIP, Instituto Superior Técnico - IST, Universidade de Lisboa - UL, Portugal
'Horia Hulubei' National Institute for Physics and Nuclear Engineering, Bucharest- Magurele, Romania
Institute of Space Sciences, Bucharest, Romania
University of Bucharest, Physics Department, Romania
University Politehnica of Bucharest, Romania
Experimental Particle Physics Department, J. Stefan Institute, Ljubljana, Slovenia
Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia
Universidad Complutense de Madrid, Madrid, Spain
Universidad de Alcala, Alcala de Henares (Madrid), Spain
Universidad de Granada and C.A.F.P.E., Granada, Spain
Universidad de Santiago de Compostela, Spain
School of Physics and Astronomy, University of Leeds, United Kingdom
Case Western Reserve University, Cleveland, OH, United States
Colorado School of Mines, Golden, CO, United States
Colorado State University, Fort Collins, CO, United States
Colorado State University, Pueblo, CO, United States
Department of Physics and Astronomy, Lehman College, City University of New York, New York, United States
Fermilab, Batavia, IL, United States
Louisiana State University, Baton Rouge, LA, United States
Michigan Technological University, Houghton, MI, United States
New York University, New York, NY, United States
Northeastern University, Boston, MA, United States
Ohio State University, Columbus, OH, United States
Pennsylvania State University, University Park, PA, United States
University of Chicago, Enrico Fermi Institute, Chicago, IL, United States
University of Hawaii, Honolulu, HI, United States
University of Nebraska, Lincoln, NE, United States
University of New Mexico, Albuquerque, NM, United States
Palabras clave:acceleration of particles; astroparticle physics
Año:2015
Volumen:804
Número:1
DOI: http://dx.doi.org/10.1088/0004-637X/804/1/15
Título revista:Astrophysical Journal
Título revista abreviado:Astrophys. J.
ISSN:0004637X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v804_n1_p_Multitudinario

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Citas:

---------- APA ----------
(2015) . Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the pierre auger observatory. Astrophysical Journal, 804(1).
http://dx.doi.org/10.1088/0004-637X/804/1/15
---------- CHICAGO ----------
Multitudinario:481. "Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the pierre auger observatory" . Astrophysical Journal 804, no. 1 (2015).
http://dx.doi.org/10.1088/0004-637X/804/1/15
---------- MLA ----------
Multitudinario:481. "Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the pierre auger observatory" . Astrophysical Journal, vol. 804, no. 1, 2015.
http://dx.doi.org/10.1088/0004-637X/804/1/15
---------- VANCOUVER ----------
Multitudinario:481. Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the pierre auger observatory. Astrophys. J. 2015;804(1).
http://dx.doi.org/10.1088/0004-637X/804/1/15