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Aranda, V. M. and Arqueros Martínez, Fernando and García Pinto, Diego and Minaya Flores, Ignacio Andrés and Rosado Vélez, Jaime and Vázquez Peñas, José Ramón (2015) Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory. European physical journal C, 75 (6). ISSN 1434-6044
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Official URL: http://dx.doi.org/10.1140/epjc/s10052-015-3471-0
Abstract
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 x 10(19) eV by analyzing cosmic rays with energies above E >= 5 x 10(18) eV arriving within an angular separation of approximately 15 degrees. We characterize the energy distributions inside these regions by two independent methods, one searching for angular dependence of energy-energy correlations and one searching for collimation of energy along the local system of principal axes of the energy distribution. No significant patterns are found with this analysis. The comparison of these measurements with astrophysical scenarios can therefore be used to obtain constraints on related model parameters such as strength of cosmic-ray deflection and density of point sources.
Item Type: | Article |
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Additional Information: | Autoría conjunta: Pierre Auger Collaboration. Artículo firmado por mas de 400 autores. |
Uncontrolled Keywords: | Galactic magnetic-field; Surface detector array; Quantum chromodynamics; Spectrum; Model; Jets |
Subjects: | Sciences > Physics > Nuclear physics |
ID Code: | 33096 |
Deposited On: | 14 Sep 2015 17:21 |
Last Modified: | 10 Dec 2018 14:57 |
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