Search for patterns by combining cosmic-ray energy and arrival directions at the Pierre Auger Observatory.
The European physical journal. C, Particles and fields 75:6 (2015) 269
Authors:
A Aab, P Abreu, M Aglietta, EJ Ahn, I Al Samarai, IFM Albuquerque, I Allekotte, J Allen, P Allison, A Almela, J Alvarez Castillo, J Alvarez-Muñiz, R Alves Batista, M Ambrosio, A Aminaei, L Anchordoqui, S Andringa, C Aramo, VM Aranda, F Arqueros, H Asorey, P Assis, J Aublin, M Ave, M Avenier, G Avila, N Awal, AM Badescu, KB Barber, J Bäuml, C Baus, JJ Beatty, KH Becker, JA Bellido, C Berat, ME Bertaina, X Bertou, PL Biermann, P Billoir, S Blaess, M Blanco, C Bleve, H Blümer, M Boháčová, D Boncioli, C Bonifazi, R Bonino, N Borodai, J Brack, I Brancus, A Bridgeman, P Brogueira, WC Brown, P Buchholz, A Bueno, S Buitink, M Buscemi, KS Caballero-Mora, B Caccianiga, L Caccianiga, M Candusso, L Caramete, R Caruso, A Castellina, G Cataldi, L Cazon, R Cester, AG Chavez, A Chiavassa, JA Chinellato, J Chudoba, M Cilmo, RW Clay, G Cocciolo, R Colalillo, A Coleman, L Collica, MR Coluccia, R Conceição, F Contreras, MJ Cooper, A Cordier, S Coutu, CE Covault, J Cronin, A Curutiu, R Dallier, B Daniel, S Dasso, K Daumiller, BR Dawson, RM de Almeida, M De Domenico, SJ de Jong, JRT de Mello Neto, I De Mitri, J de Oliveira, V de Souza, L Del Peral, O Deligny, H Dembinski, N Dhital, C Di Giulio, A Di Matteo, JC Diaz, ML Díaz Castro, F Diogo, C Dobrigkeit, W Docters, JC D'Olivo, A Dorofeev, Q Dorosti Hasankiadeh, MT Dova, J Ebr, R Engel, M Erdmann, M Erfani, CO Escobar, J Espadanal, A Etchegoyen, P Facal San Luis, H Falcke, K Fang, G Farrar, AC Fauth, N Fazzini, AP Ferguson, M Fernandes, B Fick, JM Figueira, A Filevich, A Filipčič, BD Fox, O Fratu, U Fröhlich, B Fuchs, T Fujii, R Gaior, B García, ST Garcia Roca, D Garcia-Gamez, D Garcia-Pinto, G Garilli, A Gascon Bravo, F Gate, H Gemmeke, PL Ghia, U Giaccari, M Giammarchi, M Giller, C Glaser, H Glass, M Gómez Berisso, PF Gómez Vitale, P Gonçalves, JG Gonzalez, N González, B Gookin, J Gordon, A Gorgi, P Gorham, P Gouffon, S Grebe, N Griffith, AF Grillo, TD Grubb, F Guarino, GP Guedes, MR Hampel, P Hansen, D Harari, TA Harrison, S Hartmann, JL Harton, A Haungs, T Hebbeker, D Heck, P Heimann, AE Herve, GC Hill, C Hojvat, N Hollon, E Holt, P Homola, JR Hörandel, P Horvath, M Hrabovský, D Huber, T Huege, A Insolia, PG Isar, I Jandt, S Jansen, C Jarne, M Josebachuili, A Kääpä, O Kambeitz, KH Kampert, P Kasper, I Katkov, B Kégl, B Keilhauer, A Keivani, E Kemp, RM Kieckhafer, HO Klages, M Kleifges, J Kleinfeller, R Krause, N Krohm, O Krömer, D Kruppke-Hansen, D Kuempel, N Kunka, D LaHurd, L Latronico, R Lauer, M Lauscher, P Lautridou, S Le Coz, MSAB Leão, D Lebrun, P Lebrun, MA Leigui de Oliveira, A Letessier-Selvon, I Lhenry-Yvon, K Link, R López, A Lopez Agüera, K Louedec, J Lozano Bahilo, L Lu, A Lucero, M Ludwig, M Malacari, S Maldera, M Mallamaci, J Maller, D Mandat, P Mantsch, AG Mariazzi, V Marin, IC Mariş, G Marsella, D Martello, L Martin, H Martinez, O Martínez Bravo, D Martraire, JJ Masías Meza, HJ Mathes, S Mathys, J Matthews, JAJ Matthews, G Matthiae, D Maurel, D Maurizio, E Mayotte, PO Mazur, C Medina, G Medina-Tanco, R Meissner, M Melissas, D Melo, A Menshikov, S Messina, R Meyhandan, S Mićanović, MI Micheletti, L Middendorf, IA Minaya, L Miramonti, B Mitrica, L Molina-Bueno, S Mollerach, M Monasor, D Monnier Ragaigne, F Montanet, C Morello, M Mostafá, CA Moura, MA Muller, G Müller, S Müller, M Münchmeyer, R Mussa, G Navarra, S Navas, P Necesal, L Nellen, A Nelles, J Neuser, P Nguyen, M Niechciol, L Niemietz, T Niggemann, D Nitz, D Nosek, V Novotny, L Nožka, L Ochilo, A Olinto, M Oliveira, N Pacheco, D Pakk Selmi-Dei, M Palatka, J Pallotta, N Palmieri, P Papenbreer, G Parente, A Parra, T Paul, M Pech, J Pȩkala, R Pelayo, IM Pepe, L Perrone, E Petermann, C Peters, S Petrera, Y Petrov, J Phuntsok, R Piegaia, T Pierog, P Pieroni, M Pimenta, V Pirronello, M Platino, M Plum, A Porcelli, C Porowski, RR Prado, P Privitera, M Prouza, V Purrello, EJ Quel, S Querchfeld, S Quinn, J Rautenberg, O Ravel, D Ravignani, B Revenu, J Ridky, S Riggi, M Risse, P Ristori, V Rizi, W Rodrigues de Carvalho, I Rodriguez Cabo, G Rodriguez Fernandez, J Rodriguez Rojo, MD Rodríguez-Frías, MD Rodríguez-Frías, D Rogozin, G Ros, J Rosado, T Rossler, M Roth, E Roulet, AC Rovero, SJ Saffi, A Saftoiu, F Salamida, H Salazar, A Saleh, F Salesa Greus, G Salina, F Sánchez, P Sanchez-Lucas, CE Santo, E Santos, EM Santos, F Sarazin, B Sarkar, R Sarmento, R Sato, N Scharf, V Scherini, H Schieler, P Schiffer, D Schmidt, FG Schröder, O Scholten, H Schoorlemmer, P Schovánek, A Schulz, J Schulz, J Schumacher, SJ Sciutto, A Segreto, M Settimo, A Shadkam, RC Shellard, I Sidelnik, G Sigl, O Sima, A Śmiał Kowski, R Šmída, GR Snow, P Sommers, J Sorokin, R Squartini, YN Srivastava, S Stanič, J Stapleton, J Stasielak, M Stephan, A Stutz, F Suarez, T Suomijärvi, AD Supanitsky, MS Sutherland, J Swain, Z Szadkowski, M Szuba, OA Taborda, A Tapia, M Tartare, A Tepe, VM Theodoro, C Timmermans, CJ Todero Peixoto, G Toma, L Tomankova, B Tomé, A Tonachini, G Torralba Elipe, D Torres Machado, P Travnicek, E Trovato, M Tueros, R Ulrich, M Unger, M Urban, JF Valdés Galicia, I Valiño, L Valore, G van Aar, P van Bodegom, AM van den Berg, S van Velzen, A van Vliet, E Varela, B Vargas Cárdenas, G Varner, JR Vázquez, RA Vázquez, D Veberič, V Verzi, J Vicha, M Videla, L Villaseñor, B Vlcek, S Vorobiov, H Wahlberg, O Wainberg, D Walz, AA Watson, M Weber, K Weidenhaupt, A Weindl, F Werner, A Widom, L Wiencke, B Wilczyńska, H Wilczyński, M Will, C Williams, T Winchen, D Wittkowski, B Wundheiler, S Wykes, T Yamamoto, T Yapici, G Yuan, A Yushkov, B Zamorano, E Zas, D Zavrtanik, M Zavrtanik, I Zaw, A Zepeda, J Zhou, Y Zhu, M Zimbres Silva, M Ziolkowski, F Zuccarello
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 [Formula: see text] eV by analyzing cosmic rays with energies above [Formula: see text] eV arriving within an angular separation of approximately 15[Formula: see text]. 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.
