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Urban M, Valdes Galicia JF, Valino I, Valore L, Van Aar G, Van Bodegom P, Van Den Berg AM, Van Velzen S, Van Vliet A, Varela E, Vargas Cardenas B, Varner G, Vazquez JR, Vazquez RA, Veberic D, Verzi V, Vicha J, Videla M, Villasenor L, Vlcek B, Vorobiov S, Wahlberg H, Wainberg O, Walz D, Watson AA, Weber M, Weidenhaupt K, Weindl A, Werner F, Widom A, Wiencke L, Wilczynska B, Wilczynski H, Will M, Williams C, Winchen T, Wittkowski D, Wundheiler B, Wykes S, Yamamoto T, Yapici T, Yuan G, Yushkov A, Zamorano B, Zas E, Zavrtanik D, Zavrtanik M, Zaw I, Zepeda A, Zhou J, Zhu Y, Zimbres Silva M, Ziolkowski M, Zuccarello F (2015)
Publication Status: Published
Publication Type: Journal article
Publication year: 2015
Publisher: SPRINGER
Book Volume: 75
Article Number: ARTN 269
Journal Issue: 6
DOI: 10.1140/epjc/s10052-015-3471-0
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.
APA:
Aab, A., Abreu, P., Aglietta, M., Ahn, E.J., Samarai, I.A., Albuquerque, I.F.M.,... Zuccarello, F. (2015). Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory. European Physical Journal C, 75(6). https://dx.doi.org/10.1140/epjc/s10052-015-3471-0
MLA:
Aab, A., et al. "Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory." European Physical Journal C 75.6 (2015).
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