COSMIC-RAY ANISOTROPIES AT VERY HIGH-ENERGIES EXPECTED FOR NEW MODELS OF THE GALACTIC MAGNETIC-FIELD

The anisotropy of cosmic ray particles (CR) with E > 10(17) eV is calculated, assuming their Galactic origin. Two recently proposed models of the Galactic magnetic field are used for trajectory calculations. We conclude that if there were many CR sources within a few kpc from the Sun then, irrespective of the model, an excess of CR protons with E congruent-to (1 divided-by 3)10(18) would be observed from the Galactic southern hemisphere. The experimental data from the SUGAR array do not show such an excess although there is a 3 sigma excess for energies about 10 times smaller. At the highest energies (> 10(19) eV), for CR of Galactic origin only iron nuclei would still be compatible with the data (SUGAR, Haverah Park, Yakutsk). Together with a recent result from the Fly's Eye experiment about the increasing contribution of protons above 10(17) eV, this would mean that at least these protons are extragalactic.