Title

Search for magnetically-induced signatures in the arrival directions of ultra-high-energy cosmic rays measured at the Pierre Auger Observatory

Authors

I. C. Maris, Université libre de Bruxelles (ULB)
J. Pekala, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
R. Smda, The Enrico Fermi Institute
J. Supk, Univerzita Palackého v Olomouci
A. Aab, Radboud University Nijmegen
P. Abreu, Universidade de Lisboa
M. Aglietta, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
J. M. Albury, The University of Adelaide
I. Allekotte, Centro Atomico Bariloche
A. Almela, Comision Nacional de Energia Atomica Argentina
J. Alvarez Castillo, Universidad Nacional Autónoma de México
J. Alvarez-Muñiz, Universidad de Santiago de Compostela
R. Alves Batista, Radboud University Nijmegen
G. A. Anastasi, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
L. Anchordoqui, Lehman College
B. Andrada, Comision Nacional de Energia Atomica Argentina
S. Andringa, Universidade de Lisboa
C. Aramo, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
P. R.Araújo Ferreira, Rheinisch-Westfälische Technische Hochschule Aachen
H. Asorey, Comision Nacional de Energia Atomica Argentina
P. Assis, Universidade de Lisboa
G. Avila, Pierre Auger Observatory
A. M. Badescu, University Politehnica of Bucharest
A. Bakalova, Institute of Physics of the Czech Academy of Sciences
A. Balaceanu, Horia Hulubei National Institute of Physics and Nuclear Engineering
F. Barbato, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
R. J.Barreira Luz, Universidade de Lisboa
K. H. Becker, Bergische Universitat Wuppertal
J. A. Bellido, The University of Adelaide
C. Berat, Universite Grenoble Alpes
M. E. Bertaina, Istituto Nazionale di Fisica Nucleare, Sezione di Torino
X. Bertou, Centro Atomico Bariloche

Document Type

Article

Publication Date

6-1-2020

Abstract

© 2020 IOP Publishing Ltd and Sissa Medialab. We search for signals of magnetically-induced effects in the arrival directions of ultra-high-energy cosmic rays detected at the Pierre Auger Observatory. We apply two different methods. One is a search for sets of events that show a correlation between their arrival direction and the inverse of their energy, which would be expected if they come from the same point-like source, they have the same electric charge and their deflection is relatively small and coherent. We refer to these sets of events as "multiplets". The second method, called "thrust", is a principal axis analysis aimed to detect the elongated patterns in a region of interest. We study the sensitivity of both methods using a benchmark simulation and we apply them to data in two different searches. The first search is done assuming as source candidates a list of nearby active galactic nuclei and starburst galaxies. The second is an all-sky blind search. We report the results and we find no statistically significant features. We discuss the compatibility of these results with the indications on the mass composition inferred from data of the Pierre Auger Observatory.

Publication Title

Journal of Cosmology and Astroparticle Physics

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