Conclusions

Cosmic ray direction measurements at energies a little above 10¹⁸eV can be interpreted in terms of the diffusion of particles from a direction towards the galactic centre. This interpretation is plausible in terms of our knowledge of the magnetic fields in the galactic plane, but requires a similarly strong magnetic field in our galactic halo, which extends at least several kiloparsecs above and below the plane.

© Copyright Astronomical Society of Australia 1997