At what particle energy do extragalactic cosmic rays start to predominate

@article{Wibig2004AtWP,
  title={At what particle energy do extragalactic cosmic rays start to predominate},
  author={T. Wibig and A. Wolfendale},
  journal={Journal of Physics G},
  year={2004},
  volume={31},
  pages={255-264}
}
We have previously argued (e.g. Szabelski et al 2002 Astropart. Phys. 17 125) that the well-known 'ankle' in the cosmic ray energy spectrum, at log E (eV) ~ 18.7–19.0, marks the transition from mainly galactic sources at lower energies to mainly extragalactic above. Recently, however, there have been claims for lower transitional energies, specifically from log E (eV) ~ 17.0 (Thompson et al 2004 Proc. Catania Cosmic Ray Conf.) via 17.2–17.8 (Berezinsky et al 2004 Astropart. Phys. 21 617) to 18… Expand

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Heavy Cosmic Ray Nuclei from Extragalactic Sources above 'The Ankle'
Ultra high energy cosmic rays
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