Počet záznamů: 1

Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

  1. 1.
    0354533 - FZU-D 2011 RIV NL eng J - Článek v odborném periodiku
    Abreu, P. - Aglietta, M. - Ahn, E.J. - Boháčová, Martina - Chudoba, Jiří - Kárová, Tatiana - Mandát, Dušan - Nečesal, Petr - Nožka, Libor - Nyklíček, M. - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - Schovancová, Jaroslava - Schovánek, Petr - Šmída, Radomír - Trávníček, Petr
    Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter.
    Astroparticle Physics. Roč. 34, č. 5 (2010), s. 314-326 ISSN 0927-6505
    Grant CEP: GA MŠk(CZ) 1M06002; GA MŠk(CZ) LA08016; GA AV ČR KJB100100904; GA MŠk LC527; GA AV ČR KJB300100801
    Výzkumný záměr: CEZ:AV0Z10100502; CEZ:AV0Z10100522
    Klíčová slova: cosmic ray * UHECR
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.808, rok: 2010

    Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, 6 x 1019 eV. The anisotropy was measured by the fraction of arrival directions that are less than 3.1° from the position of an active galactic nucleus within 75 Mpc (using the Veron-Cetty and Veron 12th catalog). An updated measurement of this fraction is reported here using the arrival directions of cosmic rays recorded above the same energy threshold through 31 December 2009. The number of arrival directions has increased from 27 to 69, allowing a more precise measurement. The correlating fraction is (38+7-6)%, compared with 21% expected for isotropic cosmic rays. This is down from the early estimate of (69+11-13)%.
    Trvalý link: http://hdl.handle.net/11104/0193514