Fig. 3.
γ-ray light curve of PKS 0447−439 from 2008 to 2018 in the energy range (0.1 − 500) GeV obtained using the aperture photometry technique for a radius of 1° around the source. A binning of one week is employed. Error bars correspond to 1σ error bars. The gray shaded regions show the 1σ, 3σ, and 5σ confidence intervals resulting from the fit with a constant function.
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