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Fig. 1


XMM-Newton and RXTE lightcurve of Cygnus X-1 on 2004 November 20/21. Here, and throughout the remainder of the letter, EPIC-pn data are shown in blue, PCA (PCU2) data in red, and HEXTE in orange, with resolutions of 100 s, 96 s, and 40 s, respectively.

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