Title
Constraints on the origin of cosmic rays above 10<sup>18</sup> ev from large-scale anisotropy searches in data of the pierre auger observatory
Date Issued
01 January 2013
Access level
open access
Resource Type
journal article
Author(s)
Abreu P.
Aglietta M.
Ahlers M.
Ahn E.J.
Albuquerque I.F.M.
Allard D.
Allekotte I.
Allen J.
Allison P.
Almela A.
Castillo J.A.
Alvarez-Muñiz J.
Alves Batista R.
Ambrosio M.
Aminaei A.
Anchordoqui L.
Andringa S.
Antiči'C T.
Aramo C.
Arganda E.
Arqueros F.
Asorey H.
Assis P.
Aublin J.
Ave M.
Avenier M.
Avila G.
Badescu A.M.
Balzer M.
Barber K.B.
Barbosa A.F.
Bardenet R.
Barroso S.L.C.
Baughman B.
Bäuml J.
Baus C.
Beatty J.J.
Becker K.H.
Bellétoile A.
Bellido J.A.
Benzvi S.
Berat C.
Bertou X.
Biermann P.L.
Billoir P.
Blanco F.
Blanco M.
Bleve C.
Blümer H.
Boháčová M.
Boncioli D.
Bonifazi C.
Bonino R.
Borodai N.
Brack J.
Brancus I.
Brogueira P.
Brown W.C.
Bruijn R.
Buchholz P.
Bueno A.
Buroker L.
Burton R.E.
Caballero-Mora K.S.
Caccianiga B.
Caramete L.
Caruso R.
Castellina A.
Catalano O.
Cataldi G.
Cazon L.
Cester R.
Chauvin J.
Cheng S.H.
Chiavassa A.
Chinellato J.A.
Chirinos Diaz J.
Chudoba J.
Cilmo M.
Clay R.W.
Cocciolo G.
Collica L.
Coluccia M.R.
Conceição R.
Contreras F.
Cook H.
Cooper M.J.
Coppens J.
Cordier A.
Coutu S.
Covault C.E.
Creusot A.
Criss A.
Cronin J.
Curutiu A.
Dagoret-Campagne S.
Dallier R.
Daniel B.
Dasso S.
Daumiller K.
Publisher(s)
IOP Publishing Ltd
Abstract
A thorough search for large-scale anisotropies in the distribution of arrival directions of cosmic rays detected above 1018 eV at the Pierre Auger Observatory is reported. For the first time, these large-scale anisotropy searches are performed as a function of both the right ascension and the declination and expressed in terms of dipole and quadrupole moments. Within the systematic uncertainties, no significant deviation from isotropy is revealed. Upper limits on dipole and quadrupole amplitudes are derived under the hypothesis that any cosmic ray anisotropy is dominated by such moments in this energy range. These upper limits provide constraints on the production of cosmic rays above 1018 eV, since they allow us to challenge an origin from stationary galactic sources densely distributed in the galactic disk and emitting predominantly light particles in all directions. © 2013. The American Astronomical Society. All rights reserved..
Volume
762
Issue
1
Language
English
OCDE Knowledge area
Física de partículas, Campos de la Física
Scopus EID
2-s2.0-84873345403
Source
Astrophysical Journal Letters
ISSN of the container
20418205
Sponsor(s)
National Science Foundation 0450696, 1053663, 1068210, 1068658, 1068696, 1212538 NSF
Seventh Framework Programme 246806, 261323 FP7
Sources of information:
Directorio de Producción Científica
Scopus