Journal
ASTROPHYSICAL JOURNAL
Volume 802, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0004-637X/802/2/111
Keywords
astroparticle physics; cosmic rays
Categories
Funding
- Comision Nacional de Energia Atomica, Argentina
- Fundacion Antorchas, Argentina
- Gobierno de la Provincia de Mendoza, Argentina
- Municipalidad de Malargue, Argentina
- NDM Holdings and Valle Las Lenas, Argentina
- Australian Research Council, Brazil
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil
- Financiadora de Estudos e Projetos (FINEP), Brazil
- Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Brazil
- Sao Paulo Research Foundation (FAPESP), Brazil [2012/51015-5, 2010/07359-6, 1999/05404-3]
- Ministerio de Ciencia e Tecnologia (MCT), Brazil
- Czech Science Foundation Grant, Czech Republic [14-17501 S]
- Centre de Calcul IN2P3/CNRS, France
- Centre National de la Recherche Scientifique (CNRS), France
- Conseil Regional Ile-de-France, France
- Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), France
- Departement Sciences de l'Univers (SDU-INSU/CNRS), France
- Institut Lagrange de Paris (ILP) within the Investissements d'Avenir Programme, France [LABEX ANR-10-LABX-63, ANR-11-IDEX-0004-02]
- Bundesministerium fur Bildung und Forschung (BMBF), Germany
- Deutsche Forschungsgemeinschaft (DFG), Germany
- Finanzministerium Baden-Wurttemberg, Germany
- Helmholtz Alliance for Astroparticle Physics (HAP), Germany
- Helmholtz-Gemeinschaft Deutscher Forschungszentrum (HGF), Germany
- Ministerium fur Wissenschaft und Forschung, Germany
- Nordrhein Westfalen, Germany
- Ministerium fur Wissenschaft, Germany
- Forschung und Kunst, Germany
- Baden-Wurttemberg, Germany
- Istituto Nazionale di Fisica Nucleare (INFN), Italy
- Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy
- Gran Sasso Center for Astroparticle Physics (CFA), Italy
- CETEMPS Center of Excellence, Italy
- Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico
- Ministerie van Onderwijs, Cultuur en Wetenschap, The Netherlands
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), The Netherlands
- Stichting voor Fundamenteel Onderzoek der Materie (FOM), The Netherlands, Poland
- National Centre for Research and Development, Poland [ERA-NET-ASPERA/01/11, ERA-NET-ASPERA/02/11]
- National Science Centre, Poland [2013/08/M/ST9/00322, 2013/08/M/ST9/00728, HARMONIA 5-2013/10/M/ST9/00062]
- Portuguese national funds, Portugal
- FEDER funds within Programa Operacional Factores de Competitividade through Fundacao para a Ciencia e a Tecnologia (COMPETE), Portugal
- Romanian Authority for Scientific Research ANCS, CNDI-UEFISCDI partnership projects Grants, Romania [20/2012, 194/2012, 1/ASPERA2/2012 ERA-NET, PN-II-RU-PD-2011-3-0145-17, PN-II-RU-PD-2011-3-0062]
- Minister of National Education, Programme Space Technology and Advanced Research (STAR), Romania [83/2013]
- Slovenian Research Agency, Slovenia
- Comunidad de Madrid, FEDER funds, Spain
- Ministerio de Educacion y Ciencia, Spain
- Xunta de Galicia, Spain
- European Community 7th Framework Program, Spain [FP7-PEOPLE-2012-IEF-328826]
- Science and Technology Facilities Council, United Kingdom
- Department of Energy [DE-AC02-07CH11359, DE-FR02-04ER41300, DE-FG02-99ER41107, DE-SC0011689]
- National Science Foundation [0450696]
- Grainger Foundation, USA
- NAFOSTED, Vietnam
- Marie Curie-IRSES/EPLANET, European Particle Physics Latin American Network, European Union 7th Framework Program [PIRSES-2009-GA-246806]
- UNESCO
- [MSMT-CR LG13007]
- [7AMB14AR005]
- [CZ.1.05/2.1.00/03.0058]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1153335] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1207253, 1212538, 1361172, 1460394, 1506486] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [0969400] Funding Source: National Science Foundation
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We present the results of an analysis of the large angular scale distribution of the arrival directions of cosmic rays with energy above 4 EeV detected at the Pierre Auger Observatory including for the first time events with zenith angle between 60 degrees and 80 degrees. We perform two Rayleigh analyses, one in the right ascension and one in the azimuth angle distributions, that are sensitive to modulations in right ascension and declination, respectively. The largest departure from isotropy appears in the E > 8 EeV energy bin, with an amplitude for the first harmonic in right ascension r(1)(alpha) = (4.4 +/- 1.0) x 10(-2), that has a chance probability P(>= r(1)(alpha)) = 6.4 x 10(-5), reinforcing the hint previously reported with vertical events alone.
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