Are Gamma-Ray Bursts the Sources of the Ultra-High Energy Cosmic Rays?
  A checklist of criteria is presented to help establish the sources of ultra-high energy cosmic rays (UHECRs). These criteria are applied to long-duration GRBs in order to determine if they are UHECR sources. The evidence seems to favor blazars and radio galaxies (or other sources) over GRBs. 
Charles D. Dermer (NRL)
astro-ph.HE