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Fig. 1.
ASM light curve of GX 9+9 between 51 500 and 52 250 MJD. The bin time is one day. The two vertical red lines indicate the times of the BeppoSAX and XMM-Newton observations, respectively. The horizontal green line indicates the mean ASM count rate of 17.1 c s−1 (228 mCrab).
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