Title

Bounds on the density of sources of ultra-high energy cosmic rays from the Pierre Auger Observatory

Authors

P. Abreu, LIP - Lisboa
M. Aglietta, Università degli Studi di Torino
M. Ahlers, University of Wisconsin-Madison
E. J. Ahn, Fermi National Accelerator Laboratory
I. F.M. Albuquerque, Universidade de Sao Paulo - USP
I. Allekotte, Instituto Balseiro
J. Allen, New York University
P. Allison, The Ohio State University
A. Almela, Universidad Nacional de San Martin
J. Alvarez Castillo, Universidad Nacional Autónoma de México
J. Alvarez-Mũniz, Universidad de Santiago de Compostela
R. Alves Batista, Universidade Estadual de Campinas
M. Ambrosio, Università degli Studi di Napoli Federico II
A. Aminaei, Radboud University Nijmegen
L. Anchordoqui, University of Wisconsin-Milwaukee
S. Andringa, LIP - Lisboa
T. Antǐci'c, Institute Ruder Boskovic
C. Aramo, Università degli Studi di Napoli Federico II
F. Arqueros, Universidad Complutense de Madrid
H. Asorey, Instituto Balseiro
P. Assis, LIP - Lisboa
J. Aublin, Laboratoire de Physique Nucléaire et de Hautes Energies
M. Ave, Universidad de Santiago de Compostela
M. Avenier, Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
G. Avila, Comision Nacional de Energia Atomica Argentina
A. M. Badescu, University Politehnica of Bucharest
K. B. Barber, The University of Adelaide
A. F. Barbosa, Centro Brasileiro de Pesquisas Físicas
R. Bardenet, Laboratoire de l'Accélérateur Linéaire
B. Baughmanc, The Ohio State University
J. Bäuml, Karlsruhe Institute of Technology, Campus North
C. Baus, Karlsruhe Institute of Technology, Campus North

Document Type

Article

Publication Date

5-1-2013

Abstract

We derive lower bounds on the density of sources of ultra-high energy cosmic rays from the lack of significant clustering in the arrival directions of the highest energy events detected at the Pierre Auger Observatory. The density of uniformly distributed sources of equal intrinsic intensity was found to be larger than ∼ (0.06-5) × 10-4 Mpc-3 at 95% CL, depending on the magnitude of the magnetic deflections. Similar bounds, in the range (0.2-7) × 10-4 Mpc-3, were obtained for sources following the local matter distribution. © 2013 IOP Publishing Ltd and Sissa Medialab srl.

Publication Title

Journal of Cosmology and Astroparticle Physics

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