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Fig. 2.
WWZ maps of CTA 102 during the 2016–17 flare. (a) γ-ray WWZ map showing strong periodicity of ∼7.6 days. (b) Time averaged γ-ray WWZ map (black) and the LSP (red). The dominant period (∼7.6 days) shows > 5σ significance. (c) Optical R-band WWZ map showing similar periodicity. (d) Same as (b) for R-band emissions.
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