TY  - JOUR
AU  - Pierre Auger Collaboration (Abreu, P. et al
AU  - Pastor, S.
PY  - 2011
DA  - 2011//
TI  - Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
T2  - Astropart Phys.
JO  - Astroparticle Physics
SP  - 627
EP  - 639
VL  - 34
IS  - 8
PB  - Elsevier Science Bv
KW  - Ultra-high energy cosmic rays
KW  - Large scale anisotropies
KW  - Pierre Auger Observatory
AB  - 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.
SN  - 0927-6505
UR  - http://arxiv.org/abs/1103.2721
UR  - https://doi.org/10.1016/j.astropartphys.2010.12.007
DO  - 10.1016/j.astropartphys.2010.12.007
LA  - English
N1  - ISI:000288930200007
ID  - PierreAugerCollaborationAbreu+Pastor2011
ER  -