Light speed variation from gamma-ray bursts

  title={Light speed variation from gamma-ray bursts},
  author={Hao Xu and Bo Qiang Ma},
  journal={Astroparticle Physics},
  • Hao Xu, B. Ma
  • Published 12 July 2016
  • Physics
  • Astroparticle Physics
Abstract The effect of quantum gravity can bring a tiny light speed variation which is detectable through energetic photons propagating from gamma ray bursts (GRBs) to an observer such as the space observatory. Through an analysis of the energetic photon data of the GRBs observed by the Fermi Gamma-ray Space Telescope (FGST), we reveal a surprising regularity of the observed time lags between photons of different energies with respect to the Lorentz violation factor due to the light speed… 

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