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Fig. 3

image

GRB 090926A spectral energy distributions as measured by the Fermi GBM and LAT in time intervals c (red curves), d1 (green curves), and d2 (blue curves) with LAT Pass 8 data above 30 MeV. Each solid curve represents the best-fitted spectral shape (Band+CUTBPL) within a 68% confidence level contour derived from the errors on the fit parameters.

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