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Fig. 3
Spectral energy distribution of NGC 1275 averaged over different periods with the newest results in red (~250 h). Arrows indicate the 95%-c.l. differential flux upper limits (5 bins/decade) for a power-law spectrum with a photon index of Γ = 3.5 (thick solid lines) and Γ = 2.3 (thin and dashed lines), respectively.
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