Amelino-Camelia, GiovanniGiovanniAmelino-CameliaD'Amico, GiacomoGiacomoD'AmicoFiore, FabrizioFabrizioFiorePuccetti, SimonettaSimonettaPuccetti2020-09-172020-09-172017-07-01https://hdl.handle.net/20.500.13025/5425eprint arXiv 1707.02413Some recent studies exposed rather strong statistical evidence of in-vacuo-dispersion-like spectral lags for gamma-ray bursts (GRBs), a linear correlation between time of observation and energy of GRB particles. Those results focused on testing in-vacuo dispersion for the most energetic GRB particles, and in particular only included photons with energy at emission greater than 40 GeV. We here extend the window of the statistical analysis down to 5 GeV and find results that are consistent with what had been previously noticed at higher energies.Astrophysics - High Energy Astrophysical PhenomenaGeneral Relativity and Quantum Cosmology Comment V2 has additional material on the similarity of properties found above and below 40 GeVhttp://adsabs.harvard.edu/abs/2017arXiv170702413A2017arXiv170702413A