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Fig. 1
CCDs for KS 1731-260 and 4U 1705-44, which define a soft color as a ratio of 3.6–5.0 keV to 2.2–3.6 keV and a hard color as a 8.6–18.0 keV over 5.0–8.6 keV ratio with the bin size of 128 s. The bursts are located with red triangles. The blue lines sketch their “atoll” tracks.
This figure is made of several images, please see below:
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