Fig. 2

Light curves of instruments with longer integration times. From top to bottom: Fermi-LAT above 2 GeV, Fermi-LAT 0.2-2 GeV, Swift/BAT, and RXTE/ASM. Flux points with integration times of 30 days are shown as open markers, while for Fermi-LAT flux points integrated over 15 days have also been derived and are added with filled markers. 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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