Galactic Anisotropy as Signature of ``Top-Down'' Mechanisms of   Ultra-High Energy Cosmic Rays
  We show that ``top-down'' mechanisms of Ultra-High Energy Cosmic Rays which involve heavy relic particle-like objects predict Galactic anisotropy of highest energy cosmic rays at the level of minimum $\sim 20%$. This anisotropy is large enough to be either observed or ruled out in the next generation of experiments. 
S. L. Dubovsky, P. G. Tinyakov