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