%0 Journal Article
%T Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
%A Pierre Auger Collaboration (Abreu, P. et al
%A Pastor, S.
%J Astroparticle Physics
%D 2011
%V 34
%N 8
%I Elsevier Science Bv
%@ 0927-6505
%G English
%F PierreAugerCollaborationAbreu+Pastor2011
%O ISI:000288930200007
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=593), last updated on Thu, 25 Aug 2011 10:44:33 +0000
%X We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 x 10(17) eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% C.L. for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations.
%K Ultra-high energy cosmic rays
%K Large scale anisotropies
%K Pierre Auger Observatory
%R 10.1016/j.astropartphys.2010.12.007
%U http://arxiv.org/abs/1103.2721
%U https://doi.org/10.1016/j.astropartphys.2010.12.007
%P 627-639