Quantum-Spacetime Scenarios and Soft Spectral Lags of the Remarkable GRB130427A

Figure 9

Here shown are the results of a study exactly of the type already described in the previous Figure 7 (including the restriction to the time interval from 190 seconds to 640 seconds after the trigger), but now excluding from the analysis a 19 GeV event from about 250 seconds after trigger. Dotted/dashed lines represent again the 10%, 1% and 0.23% probability that the given frequency of occurrence of spectral lags is a chance occurrence.