par Tiniakov, Petr ;Urban, Federico
Référence Journal of experimental and theoretical physics, 120, 3, page (533-540)
Publication Publié, 2014-11-10
Référence Journal of experimental and theoretical physics, 120, 3, page (533-540)
Publication Publié, 2014-11-10
Article révisé par les pairs
Résumé : | The full-sky multipole coefficients of the ultra-high energy cosmic ray (UHECR) flux have been measured for the first time by the Pierre Auger and Telescope Array collaborations using a joint data set with E > 10 EeV. We calculate these harmonic coefficients in the model where UHECR are protons and sources trace the local matter distribution, and compare our results with observations. We find that the expected power for low multipoles (dipole and quadrupole, in particular) is sytematically higher than in the data: the observed flux is too isotropic. We then investigate to which degree our predictions are influenced by UHECR deflections in the regular Galactic magnetic field. It turns out that the UHECR power spectrum coefficients C |