Počet záznamů: 1

Measurement of the energy spectrum of cosmic rays above 10.sup.18./sup. eV using the Pierre Auger Observatory

  1. 1.
    0355276 - FZU-D 2011 RIV NL eng J - Článek v odborném periodiku
    Abraham, J. - Abreu, P. - Aglietta, M. - Boháčová, Martina - Chudoba, Jiří - Kárová, Tatiana - Mandát, Dušan - Nečesal, Petr - Nožka, Libor - Nyklíček, Michal - Palatka, Miroslav - Pech, Miroslav - Prouza, Michael - Řídký, Jan - Schovancová, Jaroslava - Schovánek, Petr - Šmída, Radomír - Trávníček, Petr
    Measurement of the energy spectrum of cosmic rays above 1018 eV using the Pierre Auger Observatory.
    Physics Letters. B. Roč. 685, 4-5 (2010), s. 239-246 ISSN 0370-2693
    Grant CEP: GA MŠk LC527; GA MŠk(CZ) 1M06002; GA AV ČR KJB100100904; GA AV ČR KJB300100801; GA MŠk(CZ) LA08016
    Výzkumný záměr: CEZ:AV0Z10100502; CEZ:AV0Z10100522
    Klíčová slova: cosmic rays * energy spectrum * Pierre Auger Observatory
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 5.255, rok: 2010

    We report a measurement of the flux of cosmic rays with unprecedented precision and statistics using the Pierre Auger Observatory. Based on fluorescence observations in coincidence with at least one surface detector we derive a spectrum for energies above 1018 eV. We also update the previously published energy spectrum obtained with the surface detector array. The two spectra are combined addressing the systematic uncertainties and, in particular, the influence of the energy resolution on the spectral shape. The spectrum can be described by a broken power law E-γ with index γ=3.3 below the ankle which is measured at log10(Eankle/eV) = 18.6. Above the ankle the spectrum is described by a power law with index 2.6 followed by a flux suppression, above about log10(E/eV) = 19.5, detected with high statistical significance.
    Trvalý link: http://hdl.handle.net/11104/0194085