Oh-My-God particle

Not to be confused with the "God Particle", or Higgs boson.

The Oh-My-God particle was an ultra-high-energy cosmic ray detected on 15 October 1991 by the Fly's Eye camera in Dugway Proving Ground, Utah, United States.[1][2][3] As of 2024, it is the highest-energy cosmic ray ever observed.[4] Its energy was estimated as (3.2±0.9)×1020 eV (320 exa-eV). The particle's energy was unexpected and called into question prevailing theories about the origin and propagation of cosmic rays.

  1. ^ Bird, D. J.; Corbato, S. C.; Dai, H. Y.; Elbert, J. W.; Green, K. D.; Huang, M. A.; Kieda, D. B.; Ko, S.; Larsen, C. G.; Loh, E. C.; Luo, M. Z.; Salamon, M. H.; Smith, J. D.; Sokolsky, P.; Sommers, P.; Tang, J. K. K.; Thomas, S. B. (March 1995). "Detection of a cosmic ray with measured energy well beyond the expected spectral cutoff due to cosmic microwave radiation". The Astrophysical Journal. 441: 144. arXiv:astro-ph/9410067. Bibcode:1995ApJ...441..144B. doi:10.1086/175344. S2CID 119092012.
  2. ^ "HiRes – The High Resolution Fly's Eye Ultra High Energy Cosmic Ray Observatory". H i R e s / High Resolution Fly's Eye. University of Utah. The highest energy particle ever recorded. Archived from the original on August 15, 2009. Retrieved February 6, 2024.
  3. ^ Cite error: The named reference q was invoked but never defined (see the help page).
  4. ^ O’Callaghan, Jonathan (May 30, 2023). "We are finally closing in on the cosmic origins of the 'OMG particle'". New Scientist. Archived from the original on June 9, 2023. Retrieved June 8, 2023.