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Fig. 2

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a) Lightcurve of GX 301−2 with 20 s resolution in the 0.5−10.0 keV energy band. Vertical lines indicate the time regimes I−IV used in the later analysis. b) Hardness ratio between the continuum energy band C (8.5−10.0 keV) and the absorbed energy band A (4.0−5.0 keV). c) Hardness ratio between C and the Fe   Kα line band F (6.3−6.5 keV).

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