Fig. 2.
Zoomed-in γ-ray light curves of 3C 273, binned into one-day time bins, for the three γ-ray flaring periods indicated by the shaded areas in Fig. 1. Upper panels, in each diagram: photon indices at the same time resolution. Average photon index values are marked by horizontal solid lines. The vertical dashed lines mark the peak times of the γ-ray outbursts in the daily light curves.
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