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Fig. 12


Top panel: light curve of the total Mg II λ2798 line flux. The flux is in units of 1042 erg s−1. Middle panel: time evolution of optical spectral index. Bottom panel: light curve of the 3000 Å continuum luminosity, in units of 1041 erg s−1. The red vertical dashed line in each plot indicates the 2009B flare.

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