Large-scale cosmic-ray anisotropies above 4 EeV measured by the Pierre Auger Observatory
Creators: name: The Pierre Auger Collaboration
name: Aab, A.
name: Abreu, P.
name: Aglietta, M.
name: Albuquerque, I. F. M.
name: Albury, J. M.
name: Allekotte, I.
name: Almela, A.
name: Castillo, J. Alvarez
name: Alvarez-Muñiz, J.
name: Anastasi, G. A.
name: Anchordoqui, L.
name: Andrada, B.
name: Andringa, S.
name: Aramo, C.
name: Asorey, H.
name: Assis, P.
name: Avila, G.
name: Badescu, A. M.
name: Balaceanu, A.
name: Barbato, F.
name: Luz, R. J. Barreira
name: Baur, S.
name: Becker, K. H.
name: Bellido, J. A.
name: Berat, C.
name: Bertaina, M. E.
name: Bertou, X.
name: Biermann, P. L.
name: Biteau, J.
name: Blaess, S. G.
name: Blanco, A.
name: Blazek, J.
name: Bleve, C.
name: Boháčová, M.
name: Bonifazi, C.
name: Borodai, N.
name: Botti, A. M.
name: Brack, J.
name: Bretz, T.
name: Bridgeman, A.
name: Briechle, F. L.
name: Buchholz, P.
name: Bueno, A.
name: Buitink, S.
name: Buscemi, M.
name: Caballero-Mora, K. S.
name: Caccianiga, L.
name: Calcagni, L.
name: Cancio, A.
name: Canfora, F.
name: Carceller, J. M.
name: Caruso, R.
name: Castellina, A.
name: Catalani, F.
name: Cataldi, G.
name: Cazon, L.
name: Chinellato, J. A.
name: Chudoba, J.
name: Chytka, L.
name: Clay, R. W.
name: Cerutti, A. C. Cobos
name: Colalillo, R.
name: Coleman, A.
name: Coluccia, M. R.
name: Conceição, R.
name: Consolati, G.
name: Contreras, F.
name: Cooper, M. J.
name: Coutu, S.
name: Covault, C. E.
name: Daniel, B.
name: Dasso, S.
name: Daumiller, K.
name: Dawson, B. R.
name: Day, J. A.
name: de Almeida, R. M.
name: de Jong, S. J.
name: De Mauro, G.
name: Neto, J. R. T. de Mello
name: De Mitri, I.
name: de Oliveira, J.
name: de Souza, V.
name: Debatin, J.
name: Deligny, O.
name: Dhital, N.
name: Castro, M. L. Díaz
name: Diogo, F.
name: Dobrigkeit, C.
name: D'Olivo, J. C.
name: Dorosti, Q.
name: Anjos, R. C. dos
name: Dova, M. T.
name: Dundovic, A.
name: Ebr, J.
name: Engel, R.
name: Erdmann, M.
name: Escobar, C. O.
name: Etchegoyen, A.
name: Falcke, H.
name: Farmer, J.
name: Farrar, G.
name: Fauth, A. C.
name: Fazzini, N.
name: Feldbusch, F.
name: Fenu, F.
name: Ferreyro, L. P.
name: Figueira, J. M.
name: Filipčič, A.
name: Freire, M. M.
name: Fujii, T.
name: Fuster, A.
name: García, B.
name: Gemmeke, H.
name: Gherghel-Lascu, A.
name: Ghia, P. L.
name: Giaccari, U.
name: Giammarchi, M.
name: Giller, M.
name: Głas, D.
name: Glombitza, J.
name: Golup, G.
name: Berisso, M. Gómez
name: Vitale, P. F. Gómez
name: González, N.
name: Goos, I.
name: Góra, D.
name: Gorgi, A.
name: Gottowik, M.
name: Grubb, T. D.
name: Guarino, F.
name: Guedes, G. P.
name: Guido, E.
name: Halliday, R.
name: Hampel, M. R.
name: Hansen, P.
name: Harari, D.
name: Harrison, T. A.
name: Harvey, V. M.
name: Haungs, A.
name: Hebbeker, T.
name: Heck, D.
name: Heimann, P.
name: Hill, G. C.
name: Hojvat, C.
name: Holt, E. M.
name: Homola, P.
name: Hörandel, J. R.
name: Horvath, P.
name: Hrabovský, M.
name: Huege, T.
name: Hulsman, J.
name: Insolia, A.
name: Isar, P. G.
name: Jandt, I.
name: Johnsen, J. A.
name: Josebachuili, M.
name: Jurysek, J.
name: Kääpä, A.
name: Kampert, K. H.
name: Keilhauer, B.
name: Kemmerich, N.
name: Kemp, J.
name: Klages, H. O.
name: Kleifges, M.
name: Kleinfeller, J.
name: Krause, R.
name: Kuempel, D.
name: Mezek, G. Kukec
name: Awad, A. Kuotb
name: Lago, B. L.
name: LaHurd, D.
name: Lang, R. G.
name: Legumina, R.
name: de Oliveira, M. A. Leigui
name: Lenok, V.
name: Letessier-Selvon, A.
name: Lhenry-Yvon, I.
name: Presti, D. Lo
name: Lopes, L.
name: López, R.
name: Casado, A. López
name: Lorek, R.
name: Luce, Q.
name: Lucero, A.
name: Malacari, M.
name: Mallamaci, M.
name: Mancarella, G.
name: Mandat, D.
name: Mantsch, P.
name: Mariazzi, A. G.
name: Mariş, I. C.
name: Marsella, G.
name: Martello, D.
name: Martinez, H.
name: Bravo, O. Martínez
name: Mathes, H. J.
name: Mathys, S.
name: Matthews, J.
name: Matthiae, G.
name: Mayotte, E.
name: Mazur, P. O.
name: Medina-Tanco, G.
name: Melo, D.
name: Menshikov, A.
name: Merenda, K. -D.
name: Michal, S.
name: Micheletti, M. I.
name: Middendorf, L.
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name: Mitrica, B.
name: Mockler, D.
name: Mollerach, S.
name: Montanet, F.
name: Morello, C.
name: Morlino, G.
name: Mostafá, M.
name: Müller, A. L.
name: Muller, M. A.
name: Müller, S.
name: Mussa, R.
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name: Nguyen, P. H.
name: Niculescu-Oglinzanu, M.
name: Niechciol, M.
name: Nitz, D.
name: Nosek, D.
name: Novotny, V.
name: Nožka, L.
name: Nucita, A
name: Núñez, L. A.
name: Olinto, A.
name: Palatka, M.
name: Pallotta, J.
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name: Parente, G.
name: Parra, A.
name: Pech, M.
name: Pedreira, F.
name: Pękala, J.
name: Pelayo, R.
name: Peña-Rodriguez, J.
name: Pereira, L. A. S.
name: Perlin, M.
name: Perrone, L.
name: Peters, C.
name: Petrera, S.
name: Phuntsok, J.
name: Pierog, T.
name: Pimenta, M.
name: Pirronello, V.
name: Platino, M.
name: Poh, J.
name: Pont, B.
name: Porowski, C.
name: Prado, R. R.
name: Privitera, P.
name: Prouza, M.
name: Puyleart, A.
name: Querchfeld, S.
name: Quinn, S.
name: Ramos-Pollan, R.
name: Rautenberg, J.
name: Ravignani, D.
name: Reininghaus, M.
name: Ridky, J.
name: Riehn, F.
name: Risse, M.
name: Ristori, P.
name: Rizi, V.
name: de Carvalho, W. Rodrigues
name: Rojo, J. Rodriguez
name: Roncoroni, M. J.
name: Roth, M.
name: Roulet, E.
name: Rovero, A. C.
name: Ruehl, P.
name: Saffi, S. J.
name: Saftoiu, A.
name: Salamida, F.
name: Salazar, H.
name: Saleh, A.
name: Salina, G.
name: Sánchez, F.
name: Santos, E. M.
name: Santos, E.
name: Sarazin, F.
name: Sarmento, R.
name: Sarmiento-Cano, C.
name: Sato, R.
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name: Schauer, M.
name: Scherini, V.
name: Schieler, H.
name: Schimassek, M.
name: Schimp, M.
name: Schmidt, D.
name: Scholten, O.
name: Schovánek, P.
name: Schröder, F. G.
name: Schröder, S.
name: Schumacher, J.
name: Sciutto, S. J.
name: Shellard, R. C.
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name: Šmída, R.
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name: Sommers, P.
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name: Souchard, J.
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name: Stolpovskiy, M.
name: Streich, A.
name: Suarez, F.
name: Suárez-Durán, M.
name: Sudholz, T.
name: Suomijärvi, T.
name: Supanitsky, A. D.
name: Šupík, J.
name: Szadkowski, Z.
name: Taboada, A.
name: Taborda, O. A.
name: Tapia, A.
name: Timmermans, C.
name: Peixoto, C. J. Todero
name: Tomé, B.
name: Elipe, G. Torralba
name: Travnicek, P.
name: Trini, M.
name: Tueros, M.
name: Ulrich, R.
name: Unger, M.
name: Urban, M.
name: Galicia, J. F. Valdés
name: Valiño, I.
name: Valore, L.
name: van Bodegom, P.
name: Berg, A. M. van den
name: van Vliet, A.
name: Varela, E.
name: Cárdenas, B. Vargas
name: Vázquez, R. A.
name: Veberič, D.
name: Ventura, C.
name: Quispe, I. D. Vergara
name: Verzi, V.
name: Vicha, J.
name: Villaseñor, L.
name: Vorobiov, S.
name: Wahlberg, H.
name: Wainberg, O.
name: Watson, A. A.
name: Weber, M.
name: Weindl, A.
name: Wiedeński, M.
name: Wiencke, L.
name: Wilczyński, H.
name: Wirtz, M.
name: Wittkowski, D.
name: Wundheiler, B.
name: Yang, L.
name: Yushkov, A.
name: Zas, E.
name: Zavrtanik, D.
name: Zavrtanik, M.
name: Zehrer, L.
name: Zepeda, A.
name: Zimmermann, B.
name: Ziolkowski, M.
name: Zong, Z.
name: Zuccarello, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present a detailed study of the large-scale anisotropies of cosmic rays with energies above 4 EeV measured using the Pierre Auger Observatory. For the energy bins [4,8] EeV and $E\geq 8$ EeV, the most significant signal is a dipolar modulation in right ascension at energies above 8 EeV, as previously reported. In this paper we further scrutinize the highest-energy bin by splitting it into three energy ranges. We find that the amplitude of the dipole increases with energy above 4 EeV. The growth can be fitted with a power law with index $β=0.79\pm 0.19$. The directions of the dipoles are consistent with an extragalactic origin of these anisotropies at all the energies considered. Additionally we have estimated the quadrupolar components of the anisotropy: they are not statistically significant. We discuss the results in the context of the predictions from different models for the distribution of ultrahigh-energy sources and cosmic magnetic fields.
description: Published version, 16 pages, 7 figures, 8 tables