Biblioteca Digital

A search for anisotropy in the arrival directions of ultra high energy cosmic rays recorded at the Pierre Auger Observatory

**Autoria(s):** Abreu, P.; Aglietta, M.; Ahlers, M.; Ahn, E. J.; Albuquerque, Ivone Freire da Mota e; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Almela, A.; Alvarez Castillo, J.; Alvarez-Muniz, J.; Ambrosio, M.; Aminaei, A.; Anchordoqui, L.; Andringa, S.; Antici'c, T.; Aramo, C.; Arganda, E.; Arqueros, F.; Asorey, H.; Assis, P.; Aublin, J.; Ave, M.; Avenier, M.; Avila, G.; Baecker, T.; Badescu, A. M.; Balzer, M.; Barber, K. B.; Barbosa, A. F.; Bardenet, R.; Barroso, S. L. C.; Baughman, B.; Baeuml, J.; Beatty, J. J.; Becker, B. R.; Becker, K. H.; Belletoile, A.; Bellido, J. A.; BenZvi, S.; Berat, C.; Bertou, X.; Biermann, P. L.; Billoir, P.; Blanco, F.; Blanco, M.; Bleve, C.; Bluemer, H.; Bohacova, M.; Boncioli, D.; Bonifazi, C.; Bonino, R.; Borodai, N.; Brack, J.; Brancus, I.; Brogueira, P.; Brown, W. C.; Bruijn, R.; Buchholz, P.; Bueno, A.; Burton, R. E.; Caballero-Mora, K. S.; Caccianiga, B.; Caramete, L.; Caruso, R.; Castellina, A.; Catalano, O.; Cataldi, G.; Cazon, L.; Cester, R.; Chauvin, J.; Cheng, S. H.; Chiavassa, A.; Chinellato, J. A.; Diaz, J. Chirinos; Chudoba, J.; Cilmo, M.; Clay, R. W.; Coluccia, M. R.; Conceicao, R.; Contreras, F.; Cook, H.; Cooper, M. J.; Coppens, J.; Cordier, A.; 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.; Almeida, R. M. de; Domenico, M. de; Donato, C. de; Jong, S. J. de; De la Vega, G.; Mello Junior, W. J. M. de; Mello Neto, J. R. T. de; De Mitri, I.; Souza, V. de; Vries, K. D. de; del Peral, L.; del Rio, M.; Deligny, O.; Dembinski, H.; Dhita, N.; Di Giulio, C.; Diaz Castro, M. L.; Diep, Rn.; Diogo, F.; Dobrigkeit, C.; Docters, W.; D'Olivo, J. C.; Dong, P. N.; Dorofeev, A.; Anjos, J. C. dos; Dova, M. T.; D'Urso, D.; Dutan, I.; Ebr, J.; Engel, R.; Erdmann, M.; Escobar, C. O.; Espadana, J.; Etchegoyen, A.; Luis, P. Facal San; Fajardo Tapia, I.; Falcke, H.; Farrar, G.; Fauth, A. C.; Fazzini, N.; Ferguson, A. P.; Fick, B.; Filevich, A.; Filipcic, A.; Fliescher, S.; Fracchiolla, C. E.; Fraenke, E. D.; Fratu, O.; Froehlich, U.; Fuchs, B.; Gaior, R.; Gamarra, R. F.; Gambetta, S.; Garcia, B.; Garcia Roca, S. T.; Garcia-Gamez, D.; Garcia-Pinto, D.; Gascon, A.; Gemmeke, H.; Ghia, P. L.; Giaccari, U.; Giller, M.; Glass, H.; Gold, M. S.; Golup, G.; Gomez Albarracin, F.; Gomez Berisso, M.; Gomez Vitale, P. F.; Goncalves, P.; Gonzalez, D.; Gonzalez, J. G.; Gookin, B.; Gorgi, A.; Gouffon, Philippe; Grashorn, E.; Grebe, S.; Griffith, N.; Grigat, M.; Grillo, A. F.; Guardincerri, Y.; Guarino, F.; Guedes, G. P.; Guzman, A.; Hague, J. D.; Hansen, P.; Harari, D.; Harmsma, S.; Harrison, T. A.; Harton, J. L.; Haungs, A.; Hebbeker, T.; Heck, D.; Herve, A. E.; Hojvat, C.; Hollon, N.; Holmes, V. C.; Homola, P.; Hoerandel, J. R.; Horneffer, A.; Horvath, P.; Hrabovsky, M.; Huege, T.; Insolia, A.; Ionita, F.; Italiano, A.; Jarne, C.; Jiraskova, S.; Josebachuili, M.; Kadija, K.; Kampert, K. H.; Karhan, P.; Kaper, P.; Kegl, 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.; Kroemer, O.; Kruppke-Hansen, D.; Kuehn, F.; Kuempe, D.; Kulbartz, J. K.; Kunka, N.; La Rosa, G.; Lachaud, C.; Lauer, R.; Lautridou, P.; Le Coz, S.; Leao, M. S. A. B.; Lebrun, D.; Lebrun, P.; Leigui de Oliveira, M. A.; Letessier-Selvon, A.; Lhenry-Yvon, I.; Link, K.; Lopez, R.; Lopez Agueera, A.; Louedec, K.; Lozano Bahilo, J.; Lu, L.; Lucero, A.; Ludwig, M.; Lyberis, H.; Macolino, C.; Maldera, S.; Mandat, D.; Mantsch, P.; Mariazzi, A. G.; Marin, J.; Marin, V.; Maris, I. C.; Marquez Falcon, H. R.; Marsella, G.; Martello, D.; Martin, L.; Martinez, H.; Martinez Bravo, O.; Mathes, H. J.; Matthews, J.; Matthews, J. A. J.; Matthiae, G.; Maure, D.; Maurizio, D.; Mazur, P. O.; Medina-Tanco, G.; Melissas, M.; Melo, D.; Menichetti, E.; Menshikov, A.; Mertsch, P.; Meurer, C.; Mi'canovi'c, S.; Micheletti, M. I.; Minaya, I. A.; Miramonti, L.; Molina-Bueno, L.; Mollerach, S.; Monasor, M.; Monnier Ragaigne, D.; Montanet, F.; Morales, B.; Morello, C.; Moreno, E.; Moreno, J. C.; Mostafa, M.; Moura, C. A.; Muller, M. A.; Mueller, G.; Muenchmeyer, M.; Mussa, R.; Navarra, G.; Navarro, J. L.; Navas, S.; Necesal, P.; Nellen, L.; Nelles, A.; Neuser, J.; Nhung, P. T.; Niechcio, M.; Niemietz, L.; Nierstenhoefer, N.; Nitz, D.; Nosek, D.; Nozka, L.; Nyklicek, M.; Oehlschlaeger, J.; Olinto, A.; Ortiz, M.; Pacheco, N.; Pakk Selmi-Dei, D.; Palatka, M.; Hotta, J. Pa; Palmieri, N.; Parente, G.; Parizot, E.; Parra, A.; Pastor, S.; Paul, T.; Pech, M.; Pekala, J.; Pelayo, R.; Pepe, I. M.; Perrone, L.; Pesce, R.; Petermann, E.; Petrera, S.; Petrinca, P.; Petrolini, A.; Petrov, Y.; Petrovic, J.; Pfendner, C.; Piegaia, R.; Pierog, T.; Pieroni, P.; Pimenta, M.; Pirronello, V.; Platino, M.; Ponce, V. H.; Pontz, M.; Porcelli, A.; Privitera, P.; Prouza, M.; Quel, E. J.; Querchfeld, S.; Rautenberg, J.; Ravel, O.; Ravignani, D.; Revenu, B.; Ridky, J.; Riggi, S.; Risse, M.; Ristori, P.; Rivera, H.; Rizi, V.; Roberts, J.; Carvalho Junior, Washington Rodrigues de; Rodriguez, G.; Rodriguez Martino, J.; Rodriguez Rojo, J.; Rodriguez-Cabo, I.; Rodriguez-Frias, M. D.; Ros, G.; Rosado, J.; Rossler, T.; Roth, M.; Rouille-d'Orfeuil, B.; Roulet, E.; Rovero, A. C.; Ruehle, C.; Saftoiu, A.; Salamida, F.; Salazar, H.; Greus, F. Salesa; Salina, G.; Sanchez, F.; Santo, C. E.; Santos, E.; Santos, E. M.; Sarazin, F.; Sarkar, B.; Sarkar, S.; Sato, R.; Scharf, N.; Scherini, V.; Schieler, H.; Schiffer, P.; Schmidt, A.; Scholten, O.; Schoorlemmer, H.; Schovancova, J.; Schovanek, P.; Schroeder, F.; Schulte, S.; Schuster, D.; Sciutto, S. J.; Scuderi, M.; Segreto, A.; Settimo, M.; Shadkam, A.; Shellard, R. C.; Sidelnik, I.; Sigl, G.; Silva Lopez, H. H.; Sima, O.; Smialkowski, A.; Smida, R.; Snow, G. R.; Sommers, P.; Sorokin, J.; Spinka, H.; Squartini, R.; Srivastava, Y. N.; Stanic, S.; Stapleton, J.; Stasielak, J.; Stephan, M.; Stutz, A.; Suarez, F.; Suomijaervi, T.; Supanitsky, A. D.; Susa, T.; Sutherland, M. S.; Swain, J.; Szadkowski, Z.; Szuba, M.; Tapia, A.; Tartare, M.; Tascau, O.; Tavera Ruiz, C. G.; Tcaciuc, R.; Tegolo, D.; Thao, N. T.; Thomas, D.; Tiffenberg, J.; Timmermans, C.; Tkaczyk, W.; Todero Peixoto, C. J.; Toma, G.; Tome, B.; Tonachini, A.; Travnicek, P.; Tridapalli, Diogo Bernardes; Tristram, G.; Trovato, E.; Tueros, M.; Ulrich, R.; Unger, M.; Urban, M.; Valdes Galicia, J. F.; Valino, I.; Valore, L.; van den Berg, A. M.; Varela, E.; Vargas Cardenas, B.; Vazquez, J. R.; Vazquez, R. A.; Veberic, D.; Verzi, V.; Vicha, J.; Videla, M.; Villasenor, L.; Wahlberg, H.; Wahrlich, P.; Wainberg, O.; Walz, D.; Watson, A. A.; Weber, M.; Weidenhaupt, K.; Weind, A.; Werner, F.; Westerhoff, S.; Whelan, B. J.; Widom, A.; Wieczorek, G.; Wiencke, L.; Wilczynska, B.; Wilczynski, H.; Will, M.; Williams, C.; Winchen, T.; Wommer, M.; Wundheiler, B.; Yamamoto, T.; Yapici, T.; Younk, P.; Yuan, G.; Yushkov, A.; Zamorano, B.; Zas, E.; Zavrtanik, D.; Zavrtanik, M.; Zaw, I.; Zepeda, A.; Zhu, Y.; Zimbres Silva, M.; Ziolkowski, M.
Contribuinte(s)	UNIVERSIDADE DE SÃO PAULO
Data(s)	17/09/2013 17/09/2013 01/04/2012
Resumo	Observations of cosmic rays arrival directions made with the Pierre Auger Observatory have previously provided evidence of anisotropy at the 99% CL using the correlation of ultra high energy cosmic rays (UHECRs) with objects drawn from the Veron-Cetty Veron catalog. In this paper we report on the use of three catalog independent methods to search for anisotropy. The 2pt-L, 2pt+ and 3pt methods, each giving a different measure of self-clustering in arrival directions, were tested on mock cosmic ray data sets to study the impacts of sample size and magnetic smearing on their results, accounting for both angular and energy resolutions. If the sources of UHECRs follow the same large scale structure as ordinary galaxies in the local Universe and if UHECRs are deflected no more than a few degrees, a study of mock maps suggests that these three method can efficiently respond to the resulting anisotropy with a P-value = 1.0% or smaller with data sets as few as 100 events. using data taken from January 1, 2004 to July 31, 2010 we examined the 20, 30, ... , 110 highest energy events with a corresponding minimum energy threshold of about 49.3 EeV. The minimum P-values found were 13.5% using the 2pt-L method, 1.0% using the 2pt+ method and 1.1% using the 3pt method for the highest 100 energy events. In view of the multiple (correlated) scans performed on the data set, these catalog-independent methods do not yield strong evidence of anisotropy in the highest energy cosmic rays. Comision Nacional de Energia Atomica, Argentina Comision Nacional de Energia Atomica, Argentina Fundacion Antorchas, Argentina Fundacion Antorchas, Argentina Gobierno De La Provincia de Mendoza, Argentina Gobierno De La Provincia de Mendoza, Argentina Municipalidad de Malargue, Argentina Municipalidad de Malargue, Argentina NDM Holdings, Argentina NDM Holdings, Argentina Valle Las Lenas, Argentina Valle Las Lenas, Argentina Australian Research Council Australian Research Council Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil Financiadora de Estudos e Projetos (FINEP), Brazil Financiadora de Estudos e Projetos (FINEP), Brazil Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Brazil Fundacao de Amparo a Pesquisa do Estado de Rio de Janeiro (FAPERJ), Brazil Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil Ministerio de Ciencia e Tecnologia (MCT), Brazil Ministerio de Ciencia e Tecnologia (MCT), Brazil AVCR, Czech Republic AVCR, Czech Republic [AV0Z10100502, AV0Z10100522] GAAV, Czech Republic GAAV, Czech Republic [KJB100100904] MSMT-CR, Czech Republic [LA08016, LC527, 1M06002, MEB111003, MSM0021620859] MSMTCR, Czech Republic Centre de Calcul IN2P3/CNRS, France Centre de Calcul IN2P3/CNRS, France Centre National de la Recherche Scientifique (CNRS), France Centre National de la Recherche Scientifique (CNRS), France Conseil Regional Ile-de-France, France Conseil Regional IledeFrance Departement Physique Nucleaire et Corpusculaire (PNC-IN2P3/CNRS), France Departement Physique Nucleaire et Corpusculaire (PNCIN2P3/CNRS), France Departement Sciences de lUnivers (SDUINSU/CNRS), France Departement Sciences de l'Univers (SDU-INSU/CNRS), France Bundesministerium fur Bildung und Forschung (BMBF), Germany Bundesministerium fur Bildung und Forschung (BMBF), Germany Deutsche Forschungsgemeinschaft (DFG), Germany Deutsche Forschungsgemeinschaft (DFG), Germany Finanzministerium BadenWurttemberg, Germany Finanzministerium Baden-Wurttemberg, Germany HelmholtzGemeinschaft Deutscher Forschungszentren (HGF), Germany Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF), Germany Ministerium fur Wissenschaft und Forschung, Germany Ministerium fur Wissenschaft und Forschung, Germany NordrheinWestfalen, Germany Nordrhein-Westfalen, Germany Ministerium fur Wissenschaft, Forschung und Kunst, Germany Ministerium fur Wissenschaft, Forschung und Kunst, Germany BadenWurttemberg, Germany Baden-Wurttemberg, Germany Istituto Nazionale di Fisica Nucleare (INFN), Italy Istituto Nazionale di Fisica Nucleare (INFN), Italy Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR), Italy Ministero dellIstruzione, dellUniversita e della Ricerca (MIUR), Italy Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico Consejo Nacional de Ciencia y Tecnologia (CONACYT), Mexico Ministerie van Onderwijs, Cultuur en Wetenschap, Netherlands Ministerie van Onderwijs, Cultuur en Wetenschap, Netherlands Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands Stichting voor Fundamenteel Onderzoek der Materie (FOM), Netherlands Ministry of Science and Higher Education, Poland Ministry of Science and Higher Education, Poland [N N202 200239, N N202 207238] Fundacao para a Ciencia e a Tecnologia, Portugal Fundacao para a Ciencia e a Tecnologia, Portugal Ministry for Higher Education, Science, and Technology, Slovenia Ministry for Higher Education, Science, and Technology, Slovenia Slovenian Research Agency, Slovenia Slovenian Research Agency, Slovenia Comunidad de Madrid, Spain Comunidad de Madrid, Spain Consejeria de Educacion de la Comunidad de Castilla La Mancha, Spain Consejeria de Educacion de la Comunidad de Castilla La Mancha, Spain FEDER, Spain FEDER, Spain Ministerio de Ciencia e Innovacion, Spain Ministerio de Ciencia e Innovacion, Spain ConsoliderIngenio (CPAN), Xunta de Galicia, Spain Consolider-Ingenio (CPAN), Xunta de Galicia, Spain Science and Technology Facilities Council, United Kingdom Science and Technology Facilities Council, United Kingdom Department of Energy USA [DE-AC02-07CH11359, DE-FR02-04ER41300] Department of Energy USA National Science Foundation (USA) National Science Foundation USA [0450696] Grainger Foundation USA Grainger Foundation USA ALFA-EC / HELEN ALFAEC/HELEN European Union European Union [MEIF-CT-2005-025057, PIEF-GA-2008-220240] UNESCO UNESCO
Identificador	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, BRISTOL, v. 48, n. 4, pp. 362-368, APR, 2012 1475-7516 http://www.producao.usp.br/handle/BDPI/33404 10.1088/1475-7516/2012/04/040 http://dx.doi.org/10.1088/1475-7516/2012/04/040
Idioma(s)	eng
Publicador	IOP PUBLISHING LTD BRISTOL
Relação	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Direitos	openAccess Copyright IOP PUBLISHING LTD
Palavras-Chave	#ULTRA HIGH ENERGY COSMIC RAYS #COSMIC RAY EXPERIMENTS #ACTIVE GALACTIC NUCLEI #SMALL-SCALE ANISOTROPY #HIRES STEREO #BL-LACERTAE #SPECTRUM #OBJECTS #ASTRONOMY & ASTROPHYSICS #PHYSICS, PARTICLES & FIELDS
Tipo	article original article publishedVersion

Acesso ao item digital