Fig. 2.
Light curves in units of counts s−1 in the soft 0.5–3 keV (top panel) and hard 3–10 keV (middle panel) energy bands, and corresponding hardness ratio ((3–10 keV)/(0.5–3 keV) bottom panel). The blue horizontal line indicates the mean value of the hardness ratio, with the 1σ uncertainty given by the blue area. Data were binned to the spin period of 238 s, error bars at 1σ.
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