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Author
Pierre Auger Collaboration (Abreu, P. et al)
;
Pastor, S.
Title
Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
Type
Journal Article
Year
2011
Publication
Astroparticle Physics
Abbreviated Journal
Astropart Phys.
Volume
34
Issue
8
Pages
627-639
Keywords
Ultra-high energy cosmic rays
;
Large scale anisotropies
;
Pierre Auger Observatory
Abstract
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.
Address
[Abreu, P.; Andringa, S.; Assis, P.; Brogueira, P.; Cazon, L.; Conceicao, R.; Goncalves, P.; Pimenta, M.; Santo, C. E.; Santos, E.; Tome, B.] LIP, P-1000 Lisbon, Portugal
Corporate Author
Thesis
Publisher
Elsevier Science Bv
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
0927-6505
ISBN
Medium
Area
Expedition
Conference
Notes
ISI:000288930200007
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
593
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