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Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei

Academic Article
Publication Date:
2008
Short description:
Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei / Abraham, J., Abreu, P., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allen, J., Allison, P., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Andringa, S., Anzalone, A., Aramo, C., Argirò, S., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., et al.. - In: ASTROPARTICLE PHYSICS. - ISSN 0927-6505. - 29(2008), pp. 188-204. [10.1016/j.astropartphys.2008.01.002]
abstract:
Data collected by the Pierre Auger Observatory provide evidence for anisotropy in the arrival directions of the cosmic rays with the
highest-energies, which are correlated with the positions of relatively nearby active galactic nuclei (AGN) [Pierre Auger Collaboration,
Science 318 (2007) 938]. The correlation has maximum significance for cosmic rays with energy greater than 6x10^19 eV and AGN at a
distance less than ~75 Mpc. We have confirmed the anisotropy at a confidence level of more than 99% through a test with parameters
specified a priori, using an independent data set. The observed correlation is compatible with the hypothesis that cosmic rays with the
highest-energies originate from extra-galactic sources close enough so that their flux is not significantly attenuated by interaction with the
cosmic background radiation (the Greisen–Zatsepin–Kuz’min effect). The angular scale of the correlation observed is a few degrees,
which suggests a predominantly light composition unless the magnetic fields are very weak outside the thin disk of our galaxy. Our pres-
ent data do not identify AGN as the sources of cosmic rays unambiguously, and other candidate sources which are distributed as nearby AGN are not ruled out. We discuss the prospect of unequivocal identification of individual sources of the highest-energy cosmic rays
within a few years of continued operation of the Pierre Auger Observatory.
Iris type:
1.1 Articolo in rivista
Keywords:
High energy cosmic rays; Anisotropy; AGN
List of contributors:
Abraham, J.; Abreu, P.; Aglietta, M.; Aguirre, C.; Allard, D.; Allekotte, I.; Allen, J.; Allison, P.; Alvarez-Muñiz, J.; Ambrosio, M.; Anchordoqui, L.; Andringa, S.; Anzalone, A.; Aramo, C.; Argirò, S.; Arisaka, K.; Armengaud, E.; Arneodo, F.; Arqueros, F.; Asch, T.; Asorey, H.; Assis, P.; Atulugama, B.; Aublin, J.; Ave, M.; Avila, G.; Bäcker, T.; Badagnani, D.; Barbosa, A.; Barnhill, D.; Barroso, S.; Bauleo, P.; Beatty, J.; Beau, T.; Becker, B.; Becker, K.; Bellido, J.; Benzvi, S.; Berat, C.; Bergmann, T.; Bernardini, P.; Bertou, X.; Biermann, P.; Billoir, P.; Blanch-Bigas, O.; Blanco, F.; Blasi, P.; Bleve, C.; Blümer, H.; Boháčová, M.; Bonifazi, C.; Bonino, R.; Brack, J.; Brogueira, P.; Brown, W.; Buchholz, P.; Bueno, A.; Burton, R.; Busca, N.; Caballero-Mora, K.; Cai, B.; Camin, D.; Caramete, L.; Caruso, R.; Carvalho, W.; Castellina, A.; Catalano, O.; Cataldi, G.; Cazon, L.; Cester, R.; Chauvin, J.; Chiavassa, A.; Chinellato, J.; Chou, A.; Chye, J.; Clay, R.; Colombo, E.; Conceição, R.; Connolly, B.; Contreras, F.; Coppens, J.; Cordier, A.; Cotti, U.; Coutu, S.; Covault, C.; Creusot, A.; Criss, A.; Cronin, J.; Curutiu, A.; Dagoret-Campagne, S.; Daumiller, K.; Dawson, B.; de Almeida, R.; De Donato, C.; de Jong, S.; De La Vega, G.; de Mello, Jr.; de Mello Neto, J.; De Mitri, I.; de Souza, V.; del Peral, L.; Deligny, O.; Selva, A.; Fratte, C.; Dembinski, H.; Di Giulio, C.; Diaz, J.; Diep, P.; Dobrigkeit, C.; D'Olivo, J.; Dong, P.; Dornic, D.; Dorofeev, A.; dos Anjos, J.; Dova, M.; D'Urso, D.; Dutan, I.; Duvernois, M.; Engel, R.; Epele, L.; Erdmann, M.; Escobar, C.; Etchegoyen, A.; San Luis, P.; Falcke, H.; Farrar, G.; Fauth, A.; Fazzini, N.; Ferrer, F.; Ferry, S.; Fick, B.; Filevich, A.; Filipčič, A.; Fleck, I.; Fracchiolla, C.; Fulgione, W.; García, B.; García Gámez, D.; Garcia-Pinto, D.; Garrido, X.; Geenen, H.; Gelmini, G.; Gemmeke, H.; Ghia, P.; Giller, M.; Glass, H.; Gold, M.; Golup, G.; Albarracin, F.; Berisso, M.; Herrero, R.; Gonçalves, P.; do Amaral, M.; Gonzalez, D.; Gonzalez, J.; González, M.; Góra, D.; Gorgi, A.; Gouffon, P.; Grassi, V.; Grillo, A.; Grunfeld, C.; Guardincerri, Y.; Guarino, F.; Guedes, G.; Gutiérrez, J.; Hague, J.; Hamilton, J.; Hansen, P.; Harari, D.; Harmsma, S.; Harton, J.; Haungs, A.; Hauschildt, T.; Healy, M.; Hebbeker, T.; Hebrero, G.; Heck, D.; Hojvat, C.; Holmes, V.; Homola, P.; Hörandel, J.; Horneffer, A.; Horvat, M.; Hrabovský, M.; Huege, T.; Hussain, M.; Iarlori, M.; Insolia, A.; Ionita, F.; Italiano, A.; Kaducak, M.; Kampert, K.; Karova, T.; Kégl, B.; Keilhauer, B.; Kemp, E.; Kieckhafer, R.; Klages, H.; Kleifges, M.; Kleinfeller, J.; Knapik, R.; Knapp, J.; Koang, D.; Krieger, A.; Krömer, O.; Kuempel, D.; Kunka, N.; Kusenko, A.; La Rosa, G.; Lachaud, C.; Lago, B.; Lebrun, D.; Lebrun, P.; Lee, J.; de Oliveira, M.; Letessier-Selvon, A.; Leuthold, M.; Lhenry-Yvon, I.; López, R.; Agüera, A.; Bahilo, J.; García, R.; Maccarone, M.; Macolino, C.; Maldera, S.; Mancarella, G.; Manceñido, M.; Mandat, D.; Mantsch, P.; Mariazzi, A.; Maris, I.; Falcon, H.; Martello, D.; Martínez, J.; Bravo, O.; Mathes, H.; Matthews, J.; Matthews, J.; Matthiae, G.; Maurizio, D.; Mazur, P.; Mccauley, T.; Mcewen, M.; Mcneil, R.; Medina, M.; Medina-Tanco, G.; Meli, A.; Melo, D.; Menichetti, E.; Menschikov, A.; Meurer, Chr.; Meyhandan, R.; Micheletti, M.; Miele, G.; Miller, W.; Mollerach, S.; Monasor, M.; Ragaigne, D.; Montanet, F.; Morales, B.; Morello, C.; Moreno, J.; Morris, C.; Mostafá, M.; Muller, M.; Mussa, R.; Navarra, G.; Navarro, J.; Navas, S.; Necesal, P.; Nellen, L.; Newman-Holmes, C.; Newton, D.; Nhung, P.; Nierstenhoefer, N.; Nitz, D.; Nosek, D.; Nožka, L.; Oehlschläger, J.; Ohnuki, T.; Olinto, A.; Olmos-Gilbaja, V.; Ortiz, M.; Ortolani, F.; Ostapchenko, S.; Otero, L.; Pacheco, N.; Selmi-Dei, D.; Palatka, M.; Pallotta, J.; Parente, G.; Parizot, E.; Parlati, S.; Pastor, S.; Patel, M.; Paul, T.; Pavlidou, V.; Payet, K.; Pech, M.; Pȩkala, J.; Pelayo, R.; Pepe, I.;
Authors of the University:
D'URSO Domenico
Handle:
https://iris.uniss.it/handle/11388/211822
Published in:
ASTROPARTICLE PHYSICS
Journal
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