Amelino-Camelia 1998: GZK-cutoff + photon-time-delays from distant GRBs probe E~M_Planck Lorentz-violation. Fermi-LAT 2009 GRB 090510 gives ~M_Planck bound. Foundational test.
Amelino-Camelia 1998: GZK-cutoff + photon-time-delays from distant GRBs probe E~M_Planck Lorentz-violation. Fermi-LAT 2009 GRB 090510 gives ~M_Planck bound. Foundational test.