Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
- Autori: Abreu, P; Aglietta, M; Ahn, E.J; Albuquerque, I.F.M; Allard, D; Allekotte, I; Allen, J; Allison, P; Alvarez Castillo, J; Alvarez-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; Conceião, 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; De Mello Jr; W.J.M; De Mello Neto, J.R.T; De 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; Díaz Castro, M.L; Diep, P.N; Dobrigkeit, C; D'Olivo, J.C; Dong, P.N; Dorofeev, A; Dos Anjos, J.C; Dova, M.T; D'Urso, D; Dutan, I; Ebr, J; Engel, R; Erdmann, M; Escobar, C.O; Etchegoyen, A; Facal San Luis, P; Falcke, 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; García Gámez, D; Garcia-Pinto, D; Gascon, A; Gemmeke, H; Gesterling, K; Ghia, P.L; Giaccari, U; Giller, M; Glass, H; Gold, M.S; Golup, G; Gomez Albarracin, F; Gómez Berisso, M; Gonalves, 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; Leigui De Oliveira, M.A; Lemiere, A; Letessier-Selvon, A; Lhenry-Yvon, I; Link, K; López, R; Lopez Agüera, A; Louedec, K; Lozano Bahilo, J; Lucero, A; Ludwig, M; Lyberis, H; MacOlino, C; Maldera, S; Mandat, D; Mantsch, P; Mariazzi, A.G; Marin, V; Maris, I.C; Marquez Falcon, H.R; Marsella, G; Martello, D; Martin, L; Martínez Bravo, O; Mathes, 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; Monnier Ragaigne, D; Montanet, 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; Pakk Selmi-Dei, D; Palatka, 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; Pes
- Anno di pubblicazione: 2011
- Tipologia: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/104469
Abstract
We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 × 1017 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.