Artículo

Multitudinario:402"Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory" (2017) Journal of Cosmology and Astroparticle Physics. 2017(6)
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Abstract:

We report a multi-resolution search for anisotropies in the arrival directions of cosmic rays detected at the Pierre Auger Observatory with local zenith angles up to 80 ° and energies in excess of 4 EeV (4 × 10 18 eV). This search is conducted by measuring the angular power spectrum and performing a needlet wavelet analysis in two independent energy ranges. Both analyses are complementary since the angular power spectrum achieves a better performance in identifying large-scale patterns while the needlet wavelet analysis, considering the parameters used in this work, presents a higher efficiency in detecting smaller-scale anisotropies, potentially providing directional information on any observed anisotropies. No deviation from isotropy is observed on any angular scale in the energy range between 4 and 8 EeV. Above 8 EeV, an indication for a dipole moment is captured; while no other deviation from isotropy is observed for moments beyond the dipole one. The corresponding p-values obtained after accounting for searches blindly performed at several angular scales, are 1.3 × 10 -5 in the case of the angular power spectrum, and 2.5 × 10 -3 in the case of the needlet analysis. While these results are consistent with previous reports making use of the same data set, they provide extensions of the previous works through the thorough scans of the angular scales. © 2017 IOP Publishing Ltd and Sissa Medialab.

Registro:

Documento: Artículo
Título:Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory
Autor:Multitudinario:402
Filiación:Centro Atómico Bariloche, Instituto Balseiro (CNEA-UNCuyo-CONICET), Argentina
Centro de Investigaciones en Láseres y Aplicaciones, CITEDEF, CONICET, Argentina
Departamento de Física, Departamento de Ciencias de la Atmósfera y Los Océanos, FCEyN, Universidad de Buenos Aires, Argentina
IFLP, Universidad Nacional de la Plata, CONICET, Argentina
Instituto de Astronomía y Física Del Espacio (IAFE CONICET-UBA), Argentina
Instituto de Física de Rosario (IFIR), CONICET/U.N.R., Facultad de Ciencias Bioquímicas y Farmacéuticas U.N.R., Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA CONICET UNSAM), Universidad Tecnológica Nacional, Facultad Regional Mendoza (CONICET/CNEA), Argentina
Instituto de Tecnologías en Detección y Astropartículas (CNEA CONICET UNSAM), Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Argentina
Observatorio Pierre Auger, Argentina
Observatorio Pierre Auger and Comisión Nacional de Energía Atómica, Argentina
Universidad Tecnológica Nacional, Facultad Regional Buenos Aires, Argentina
University of Adelaide, Australia
Centro Brasileiro de Pesquisas Fisicas (CBPF), Brazil
Universidade de São Paulo, Escola de Engenharia de Lorena, Brazil
Universidade de São Paulo, Inst. de Física de São Carlos, São Carlos, Brazil
Universidade de São Paulo, Inst. de Física, São Paulo, Brazil
Universidade Estadual de Campinas (UNICAMP), Brazil
Universidade Estadual de Feira de Santana (UEFS), Brazil
Universidade Federal de Pelotas, Brazil
Universidade Federal Do ABC (UFABC), Brazil
Universidade Federal Do Paraná, Setor Palotina, Brazil
Universidade Federal Do Rio de Janeiro (UFRJ), Instituto de Física, Brazil
Universidade Federal Fluminense, Brazil
Universidad Industrial de Santander, Colombia
Institute of Physics (FZU), Academy of Sciences of the Czech Republic, Czech Republic
Palacky University, RCPTM, Czech Republic
University Prague, Institute of Particle and Nuclear Physics, Czech Republic
Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud, Univ. Paris/Saclay, CNRS-IN2P3, France
Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), Universités Paris 6 et Paris 7, CNRS-IN2P3, France
Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Grenoble-Alpes, CNRS/IN2P3, France
Bergische Universität Wuppertal, Department of Physics, Germany
Karlsruhe Institute of Technology, Institut für Experimentelle Kernphysik (IEKP), Germany
Karlsruhe Institute of Technology, Institut für Kernphysik (IKP), Germany
Karlsruhe Institute of Technology, Institut für Prozessdatenverarbeitung und Elektronik (IPE), Germany
RWTH Aachen University, III. Physikalisches Institut A, Germany
Universität Hamburg, II. Institut für Theoretische Physik, Germany
Universität Siegen, Fachbereich 7 Physik - Experimentelle Teilchenphysik, Germany
Gran Sasso Science Institute (INFN), L'Aquila, Italy
INAF - Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo, Italy
INFN Laboratori Nazionali Del Gran Sasso, Italy
INFN, Gruppo Collegato dell'Aquila, Italy
INFN, Sezione di Catania, Italy
INFN, Sezione di Lecce, Italy
INFN, Sezione di Milan, Italy
INFN, Sezione di Napoli, Italy
INFN, Sezione di Roma Tor Vergata, Italy
INFN, Sezione di Torino, Italy
Osservatorio Astrofisico di Torino (INAF), Torino, Italy
Università Del Salento, Dipartimento di Ingegneria, Italy
Università Del Salento, Dipartimento di Matematica e Fisica E. de Giorgi, Italy
Università dell'Aquila, Dipartimento di Scienze Fisiche e Chimiche, Italy
Università di Catania, Dipartimento di Fisica e Astronomia, Italy
Università di Milano, Dipartimento di Fisica, Italy
Università di Napoli federico II, Dipartimento di Fisica Ettore Pancini, Italy
Università di Roma Tor Vergata, Dipartimento di Fisica, Italy
Università Torino, Dipartimento di Fisica, Italy
Benemérita Universidad Autónoma de Puebla (BUAP), Mexico
Centro de Investigación y de Estudios Avanzados Del IPN (CINVESTAV), Mexico
Unidad Profesional Interdisciplinaria en Ingeniería y Tecnologías Avanzadas, Instituto Politécnico Nacional (UPIITA-IPN), Mexico
Universidad Autónoma de Chiapas, Mexico
Universidad Michoacana de San Nicolás de Hidalgo, Mexico
Universidad Nacional Autónoma de México, Mexico
Institute for Mathematics Astrophysics and Particle Physics (IMAPP), Radboud Universiteit, Nijmegen, Netherlands
KVI - Center for Advanced Radiation Technology, University of Groningen, Netherlands
Nationaal Instituut voor Kernfysica en Hoge Energie Fysica (NIKHEF), Netherlands
Stichting Astronomisch Onderzoek in Nederland (ASTRON), Dwingeloo, Netherlands
Institute of Nuclear Physics PAN, Poland
University of Lódź, Faculty of Astrophysics, Poland
University of Lódź, Faculty of High-Energy Astrophysics, Poland
Laboratorio de Instrumentacao e Fisica Experimental de Particulas - LIP, Instituto Superior Técnico - IST, Universidade de Lisboa - UL, Portugal
Horia Hulubei National Institute for Physics and Nuclear Engineering, Romania
Institute of Space Science, Romania
University of Bucharest, Physics Department, Romania
University Politehnica of Bucharest, Romania
Experimental Particle Physics Department, J. Stefan Institute, Slovenia
Laboratory for Astroparticle Physics, University of Nova Gorica, Slovenia
Universidad Complutense de Madrid, Spain
Universidad de Granada, C.A.F.P.E., Spain
Universidad de Santiago de Compostela, Spain
Case Western Reserve University, United States
Colorado School of Mines, United States
Colorado State University, United States
Department of Physics and Astronomy, Lehman College, City University of New York, United States
Fermi National Accelerator Laboratory, United States
Louisiana State University, United States
Michigan Technological University, United States
New York University, United States
Northeastern University, United States
Ohio State University, United States
Pennsylvania State University, United States
University of Chicago, United States
University of Hawaii, United States
University of Nebraska, United States
University of New Mexico, United States
School of Physics and Astronomy, University of Leeds, Leeds, United Kingdom
Max-Planck-Institut für Radioastronomie, Bonn, Germany
SUBATECH, École des Mines de Nantes, CNRS-IN2P3, Université de Nantes, France
Palabras clave:Cosmic ray experiments; ultra high energy cosmic rays
Año:2017
Volumen:2017
Número:6
DOI: http://dx.doi.org/10.1088/1475-7516/2017/06/026
Handle:http://hdl.handle.net/20.500.12110/paper_14757516_v2017_n6_p_Multitudinario
Título revista:Journal of Cosmology and Astroparticle Physics
Título revista abreviado:J. Cosmol. Astroparticle Phys.
ISSN:14757516
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14757516_v2017_n6_p_Multitudinario

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Citas:

---------- APA ----------
(2017) . Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory. Journal of Cosmology and Astroparticle Physics, 2017(6).
http://dx.doi.org/10.1088/1475-7516/2017/06/026
---------- CHICAGO ----------
Multitudinario:402. "Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory" . Journal of Cosmology and Astroparticle Physics 2017, no. 6 (2017).
http://dx.doi.org/10.1088/1475-7516/2017/06/026
---------- MLA ----------
Multitudinario:402. "Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory" . Journal of Cosmology and Astroparticle Physics, vol. 2017, no. 6, 2017.
http://dx.doi.org/10.1088/1475-7516/2017/06/026
---------- VANCOUVER ----------
Multitudinario:402. Multi-resolution anisotropy studies of ultrahigh-energy cosmic rays detected at the Pierre Auger Observatory. J. Cosmol. Astroparticle Phys. 2017;2017(6).
http://dx.doi.org/10.1088/1475-7516/2017/06/026