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Fig. 12

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On-pulse gamma-ray spectral energy distributions (SEDs) obtained with the Fermi Large Area Telescope. Top: PSR J0248+6021, in the phase range 0.2 < φ < 0.55. Bottom: PSR J2240+5832 in the phase range 0.50 < φ < 0.75. Plotted points are from power-law likelihood fits to individual energy bands with  ≥2σ detection significance above background for two degrees of freedom, otherwise an upper limit arrow is shown. The solid black line shows the maximum likelihood fit to a power law with exponential cutoff (Eq. (2)). The dashed lines are  ±1σ uncertainties in the fit parameters.

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