Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

The Pierre Auger Collaboration

doi:10.1140/epjc/s10052-015-3471-0

Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

The Pierre Auger Collaboration

Physics

Universität Siegen
University of Lisbon
Università di Torino and Sezione INFN
Fermilab
Université Paris 11
University of São Paulo
CNEA-UNCuyo-CONICET
New York University
Ohio State University
Instituto de Tecnologías en Detección y Astropartículas (CNEA CONICET UNSAM)
Universidad Tecnológica Nacional
Universidad Nacional Autonoma de Mexico
Universidad de Santiago de Compostela
Universität Hamburg
Università di Napoli 'Federico II' and Sezione INFN
Radboud University Nijmegen
City University of New York
Universidad Complutense de Madrid
Laboratoire de Physique Nucléaire et de Hautes Energies
UJF-Grenoble 1/CNRS-INSU
Observatorio Pierre Auger and Comisión Nacional de Energía Atómica
University Politehnica of Bucharest
University of Adelaide
Institut für Experimentelle Kernphysik (IEKP)
Bergische Universität Wuppertal
Max-Planck-Institut für Radioastronomie
Universita del Salento
Institut für Prozessdatenverarbeitung und Elektronik
Academy of Sciences of the Czech Republic
Laboratori Nazionali del Gran Sasso
Universidade Federal do Rio de Janeiro
Institute of Nuclear Physics PAN
Colorado State University

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E ≥ 6×10¹⁹ eV by analyzing cosmic rays with energies above E ≥ 5×10¹⁸ eV arriving within an angular separation of approximately 15^∘. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.

Original language	British English
Article number	269
Journal	European Physical Journal C
Volume	75
Issue number	6
DOIs	https://doi.org/10.1140/epjc/s10052-015-3471-0
State	Published - 23 Jun 2015

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@article{257d283e14c74db7a9759b4d2a88c106,

title = "Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory",

abstract = "Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E ≥ 6×1019 eV by analyzing cosmic rays with energies above E ≥ 5×1018 eV arriving within an angular separation of approximately 15∘. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.",

author = "\{The Pierre Auger Collaboration\} and A. Aab and P. Abreu and M. Aglietta and Ahn, \{E. J.\} and Samarai, \{I. Al\} and Albuquerque, \{I. F.M.\} and I. Allekotte and J. Allen and P. Allison and A. Almela and Castillo, \{J. Alvarez\} and J. Alvarez-Mu{\~n}iz and Batista, \{R. Alves\} and M. Ambrosio and A. Aminaei and L. Anchordoqui and S. Andringa and C. Aramo and Aranda, \{V. M.\} and F. Arqueros and H. Asorey and P. Assis and J. Aublin and M. Ave and M. Avenier and G. Avila and N. Awal and Badescu, \{A. M.\} and Barber, \{K. B.\} and J. B{\"a}uml and C. Baus and Beatty, \{J. J.\} and Becker, \{K. H.\} and Bellido, \{J. A.\} and C. Berat and Bertaina, \{M. E.\} and X. Bertou and Biermann, \{P. L.\} and P. Billoir and S. Blaess and M. Blanco and C. Bleve and H. Bl{\"u}mer and M. Boh{\'a}{\v c}ov{\'a} and D. Boncioli and C. Bonifazi and R. Bonino and N. Borodai and J. Brack and Vliet, \{A. van\}",

note = "Publisher Copyright: {\textcopyright} 2015, The Author(s).",

year = "2015",

month = jun,

day = "23",

doi = "10.1140/epjc/s10052-015-3471-0",

language = "British English",

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TY - JOUR

T1 - Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

AU - The Pierre Auger Collaboration

AU - Aab, A.

AU - Abreu, P.

AU - Aglietta, M.

AU - Ahn, E. J.

AU - Samarai, I. Al

AU - Albuquerque, I. F.M.

AU - Allekotte, I.

AU - Allen, J.

AU - Allison, P.

AU - Almela, A.

AU - Castillo, J. Alvarez

AU - Alvarez-Muñiz, J.

AU - Batista, R. Alves

AU - Ambrosio, M.

AU - Aminaei, A.

AU - Anchordoqui, L.

AU - Andringa, S.

AU - Aramo, C.

AU - Aranda, V. M.

AU - Arqueros, F.

AU - Asorey, H.

AU - Assis, P.

AU - Aublin, J.

AU - Ave, M.

AU - Avenier, M.

AU - Avila, G.

AU - Awal, N.

AU - Badescu, A. M.

AU - Barber, K. B.

AU - Bäuml, J.

AU - Baus, C.

AU - Beatty, J. J.

AU - Becker, K. H.

AU - Bellido, J. A.

AU - Berat, C.

AU - Bertaina, M. E.

AU - Bertou, X.

AU - Biermann, P. L.

AU - Billoir, P.

AU - Blaess, S.

AU - Blanco, M.

AU - Bleve, C.

AU - Blümer, H.

AU - Boháčová, M.

AU - Boncioli, D.

AU - Bonifazi, C.

AU - Bonino, R.

AU - Borodai, N.

AU - Brack, J.

AU - Vliet, A. van

PY - 2015/6/23

Y1 - 2015/6/23

N2 - Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E ≥ 6×1019 eV by analyzing cosmic rays with energies above E ≥ 5×1018 eV arriving within an angular separation of approximately 15∘. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.

AB - Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E ≥ 6×1019 eV by analyzing cosmic rays with energies above E ≥ 5×1018 eV arriving within an angular separation of approximately 15∘. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.

UR - https://www.scopus.com/pages/publications/84934982863

U2 - 10.1140/epjc/s10052-015-3471-0

DO - 10.1140/epjc/s10052-015-3471-0

M3 - Article

AN - SCOPUS:84934982863

SN - 1434-6044

VL - 75

JO - European Physical Journal C

JF - European Physical Journal C

IS - 6

M1 - 269

ER -

Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

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