Pointlike gamma ray sources as signatures of distant accelerators of ultrahigh energy cosmic rays.

@article{Gabici2005PointlikeGR,
  title={Pointlike gamma ray sources as signatures of distant accelerators of ultrahigh energy cosmic rays.},
  author={Stefano Gabici and Felix Aharonian},
  journal={Physical review letters},
  year={2005},
  volume={95 25},
  pages={
          251102
        }
}
We discuss the possibility of observing distant accelerators of ultrahigh energy cosmic rays in synchrotron gamma rays. Protons propagating away from their acceleration sites produce extremely energetic electrons during photopion interactions with cosmic microwave background photons. If the accelerator is embedded in a magnetized region, these electrons will emit high energy synchrotron radiation. The resulting synchrotron source is expected to be pointlike, steady, and detectable in the GeV… 
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HIGH-ENERGY EMISSION INDUCED BY ULTRA-HIGH-ENERGY PHOTONS AS A PROBE OF ULTRA-HIGH-ENERGY COSMIC-RAY ACCELERATORS EMBEDDED IN THE COSMIC WEB
The photomeson production in ultra-high-energy cosmic-ray (UHECR) accelerators such as ?-ray bursts and active galaxies may lead to ultra-high-energy (UHE) ?-ray emission. We show that the generation
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