Galactic Sources

AGASA data for E~10^18 eV (ASTPHY 10 1999)

Anisotropy of ~4% was observed.
Enhancement towards Cygnus and the Galactic Center.
May be due to proton excess, in which case protons would make up ~20-40% of all cosmic rays.
Alternatively, neutron primaries could be propagating from the Galactic Center. (Neutral particles would not be deflected by the Galaxy's magnetic field).