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e-Article

Search for First Harmonic Modulation in the Right Ascension Distribution of Cosmic Rays Detected at the Pierre Auger Observatory
Document Type
Working Paper
Author
The Pierre Auger CollaborationAbreu, P.Aglietta, M.Ahn, E. J.Albuquerque, I. F. M.Allard, D.Allekotte, I.Allen, J.Allison, P.Castillo, J. AlvarezAlvarez-Muñiz, J.Ambrosio, M.Aminaei, A.Anchordoqui, L.Andringa, S.Antičić, T.Aramo, C.Arganda, E.Arqueros, F.Asorey, H.Assis, P.Aublin, J.Ave, M.Avenier, M.Avila, G.Bäcker, T.Balzer, M.Barber, K. B.Barbosa, A. F.Bardenet, R.Barroso, S. L. C.Baughman, B.Beatty, J. J.Becker, B. R.Becker, K. H.Bellido, J. A.Benzvi, S.Berat, C.Bertou, X.Biermann, P. L.Billoir, P.Blanco, F.Blanco, M.Bleve, C.Blümer, H.Boháčová, M.Boncioli, D.Bonifazi, C.Bonino, R.Borodai, N.Brack, J.Brogueira, P.Brown, W. C.Bruijn, R.Buchholz, P.Bueno, A.Burton, R. E.Caballero-Mora, K. S.Caramete, L.Caruso, R.Castellina, A.Cataldi, G.Cazon, L.Cester, R.Chauvin, J.Chiavassa, A.Chinellato, J. A.Chou, A.Chudoba, J.Clay, R. W.Coluccia, M. R.Conceição, R.Contreras, F.Cook, H.Cooper, M. J.Coppens, J.Cordier, A.Cotti, U.Coutu, S.Covault, C. E.Creusot, A.Criss, A.Cronin, J.Curutiu, A.Dagoret-Campagne, S.Dallier, R.Dasso, S.Daumiller, K.Dawson, B. R.de Almeida, R. M.De Domenico, M.De Donato, C.de Jong, S. J.De La Vega, G.Junior, W. J. M. de MelloNeto, J. R. T. de MelloDe Mitri, I.de Souza, V.de Vries, K. D.Decerprit, G.del Peral, L.Deligny, O.Dembinski, H.Denkiewicz, A.Di Giulio, C.Diaz, J. C.Castro, M. L. DíazDiep, P. N.D'Olivo, C. Dobrigkeit J. C.Dong, P. N.Dorofeev, A.Anjos, J. C. dosDova, M. T.D'Urso, D.Dutan, I.Ebr, J.Engel, R.Erdmann, M.Escobar, C. O.Etchegoyen, A.Luis, P. Facal SanFalcke, H.Farrar, G.Fauth, A. C.Fazzini, N.Ferguson, A. P.Ferrero, A.Fick, B.Filevich, A.Filipčič, A.Fliescher, S.Fracchiolla, C. E.Fraenkel, E. D.Fröhlich, U.Fuchs, B.Gamarra, R. F.Gambetta, S.García, B.Gámez, D. GarcíaGarcia-Pinto, D.Gascon, A.Gemmeke, H.Gesterling, K.Ghia, P. L.Giaccari, U.Giller, M.Glass, H.Gold, M. S.Golup, G.Albarracin, F. GomezBerisso, M. GómezGonçalves, P.Gonzalez, D.Gonzalez, J. G.Gookin, B.Góra, D.Gorgi, A.Gouffon, P.Gozzini, S. R.Grashorn, E.Grebe, S.Griffith, N.Grigat, M.Grillo, A. F.Guardincerri, Y.Guarino, F.Guedes, G. P.Hague, J. D.Hansen, P.Harari, D.Harmsma, S.Harton, J. L.Haungs, A.Hebbeker, T.Heck, D.Herve, A. E.Hojvat, C.Holmes, V. C.Homola, P.Hörandel, J. R.Horneffer, A.Hrabovský, M.Huege, T.Insolia, A.Ionita, F.Italiano, A.Jiraskova, S.Kadija, K.Kampert, K. H.Karhan, P.Karova, T.Kasper, P.Kégl, B.Keilhauer, B.Keivani, A.Kelley, J. L.Kemp, E.Kieckhafer, R. M.Klages, H. O.Kleifges, M.Kleinfeller, J.Knapp, J.Koang, D. -H.Kotera, K.Krohm, N.Krömer, O.Kruppke-Hansen, D.Kuehn, F.Kuempel, D.Kulbartz, J. K.Kunka, N.La Rosa, G.Lachaud, C.Lautridou, P.Leão, M. S. A. B.Lebrun, D.Lebrun, P.de Oliveira, M. A. LeiguiLemiere, A.Letessier-Selvon, A.Lhenry-Yvon, I.Link, K.López, R.Agüera, A. LopezLouedec, K.Bahilo, J. LozanoLucero, A.Ludwig, M.Lyberis, H.Macolino, C.Maldera, S.Mandat, D.Mantsch, P.Mariazzi, A. G.Marin, V.Maris, I. C.Falcon, H. R. MarquezMarsella, G.Martello, D.Martin, L.Bravo, O. MartínezMathes, H. J.Matthews, J.Matthews, J. A. J.Matthiae, G.Maurizio, D.Mazur, P. O.Medina-Tanco, G.Melissas, M.Melo, D.Menichetti, E.Menshikov, A.Mertsch, P.Meurer, C.Mićanović, S.Micheletti, M. I.Miller, W.Miramonti, L.Mollerach, S.Monasor, M.Ragaigne, D. MonnierMontanet, F.Morales, B.Morello, C.Moreno, E.Moreno, J. C.Morris, C.Mostafá, M.Moura., C. A.Mueller, S.Muller, M. A.Müller, G.Münchmeyer, M.Mussa, R.Navarra, G.Navarro, J. L.Navas, S.Necesal, P.Nellen, L.Nelles, A.Nhung, P. T.Nierstenhoefer, N.Nitz, D.Nosek, D.Nožka, L.Nyklicek, M.Oehlschläger, J.Olinto, A.Oliva, P.Olmos-Gilbaja, V. M.Ortiz, M.Pacheco, N.Selmi-Dei, D. PakkPalatka, M.Pallotta, J.Palmieri, N.Parente, G.Parizot, E.Parra, A.Parrisius, J.Parsons, R. D.Pastor, S.Paul, T.Pech, M.Pȩkala, J.Pelayo, R.Pepe, I. M.Perrone, L.Pesce, R.Petermann, E.Petrera, S.Petrinca, P.Petrolini, A.Petrov, Y.Petrovic, J.Pfendner, C.Phan, N.Piegaia, R.Pierog, T.Pieroni, P.Pimenta, M.Pirronello, V.Platino, M.Ponce, V. H.Pontz, M.Privitera, P.Prouza, M.Quel, E. J.Rautenberg, J.Ravel, O.Ravignani, D.Revenu, B.Ridky, J.Risse, M.Ristori, P.Rivera, H.Rivière, C.Rizi, V.Robledo, C.de Carvalho, W. RodriguesRodriguez, G.Martino, J. RodriguezRojo, J. RodriguezRodriguez-Cabo, I.Rodríguez-Frías, M. D.Ros, G.Rosado, J.Rossler, T.Roth, M.Rouillé-d'Orfeuil, B.Roulet, E.Rovero, A. C.Rühle, C.Salamida, F.Salazar, H.Salina, G.Sánchez, F.Santander, M.Santo, C. E.Santos, E.Santos, E. M.Sarazin, F.Sarkar, S.Sato, R.Scharf, N.Scherini, V.Schieler, H.Schiffer, P.Schmidt, A.Schmidt, F.Schmidt, T.Scholten, O.Schoorlemmer, H.Schovancova, J.Schovánek, P.Schroeder, F.Schulte, S.Schuster, D.Sciutto, S. J.Scuderi, M.Segreto, A.Semikoz, D.Settimo, M.Shadkam, A.Shellard, R. C.Sidelnik, I.Sigl, G.Śmiałkowski, A.Šmída, R.Snow, G. R.Sommers, P.Sorokin, J.Spinka, H.Squartini, R.Stapleton, J.Stasielak, J.Stephan, M.Stutz, A.Suarez, F.Suomijärvi, T.Supanitsky, A. D.Šuša, T.Sutherland, M. S.Swain, J.Szadkowski, Z.Szuba, M.Tamashiro, A.Tapia, A.Taşcău, O.Tcaciuc, R.Tegolo, D.Thao, N. T.Thomas, D.Tiffenberg, J.Timmermans, C.Tiwari, D. K.Tkaczyk, W.Peixoto, C. J. ToderoTomé, B.Tonachini, A.Travnicek, P.Tridapalli, D. B.Tristram, G.Trovato, E.Tueros, M.Ulrich, R.Unger, M.Urban, M.Galicia, J. F. ValdésValiño, I.Valore, L.Berg, A. M. van denCárdenas, B. VargasVázquez, J. R.Vázquez, R. A.Veberič, D.Verzi, V.Videla, M.Villaseñor, L.Wahlberg, H.Wahrlich, P.Wainberg, O.Warner, D.Watson, A. A.Weber, M.Weidenhaupt, K.Weindl, A.Westerhoff, S.Whelan, B. J.Wieczorek, G.Wiencke, L.Wilczyńska, B.Wilczyński, H.Will, M.Williams, C.Winchen, T.Winders, L.Winnick, M. G.Wommer, M.Wundheiler, B.Yamamoto, T.Younk, P.Yuan, G.Zamorano, B.Zas, E.Zavrtanik, D.Zavrtanik, M.Zaw, I.Zepeda, A.
Source
Astropart.Phys.34:627-639,2011
Subject
Astrophysics - High Energy Astrophysical Phenomena
Language
Abstract
We present the results of searches for dipolar-type anisotropies in different energy ranges above $2.5\times 10^{17}$ eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% $C.L.$ for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations.
Comment: 28 pages, 11 figures