Fig. 3
Light curves obtained with the VLBA at 43 GHz. The total flux and the flux from the core region are shown. The gray shaded area depicts the time interval related to the multi-instrument campaign. The two vertical blue lines indicate the location of the two VHE γ-ray flares at MJD 54 952 and MJD 54 973 that are discussed in Sects. 4.2 and 4.3.
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