Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION (P HANSEN PERTENECE A LA COLABORACIÓN AUGER)

EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS

SPRINGER

Lugar: Berlin; Año: 2015 vol. 75 p. 1 - 15

1434-6044

Energy-dependent patterns in the arrival directions of cosmic rays are searched for using data of the Pierre Auger Observatory. We investigate local regions around the highest-energy cosmic rays with E >= 6×1019 eV by analyzing cosmic rays with energies above E >= 5×10^18 eV arriving within an angular separation of approximately 15^0.We characterize the energy distributions inside these regions by twoindependent methods, one searching for angular dependenceof energy-energy correlations and one searching for collimationof energy along the local system of principal axesof the energy distribution. No significant patterns are foundwith this analysis. The comparison of these measurementswith astrophysical scenarios can therefore be used to obtainconstraints on related model parameters such as strength ofcosmic-ray deflection and density of point sources.