Fig. 15

Mean values of the reduced χ2 distributions of logparabolic fits to one hundred realisations of each model for the SEDs of PKS 2155-304. The abscissa shows the logarithm of the magnetic field strength to distinguish different hadronic models. The error bars show the standard deviation of the distributions. The energy range of the fit was chosen to provide a good reduced χ2 for two different SSC models. The grey band is the union of the 1-σ envelopes of those SSC spectrum fits.
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