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Fig. 5
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HE SEDs for the three periastrons – P2009 (blue), P2014 (violet), and P2020 (orange) – observed with Fermi-LAT – together with the best-fit PL and its 1σ uncertainty. Each SED is obtained using ± 100 days aroundeach one. For comparison, the overall SED above 10 GeV is shown (grey).
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