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Fig. 3


a) RXTE/PCA, b) Swift/XRT, c) XMM-Newton/RGS, d) XMM-Newton/EPIC-pn count rate, e) EPIC-pn hardness (ratio of count rates in the 2–10 keV to 0.2–2 keV bands), and f) XMM-Newton/OM (UVW1 and UVM2) flux curves on days 2.7 to 3.3. The time resolution is 16 s for the RXTE/PCA data and 100 s for the data from the other X-ray instruments. The X-ray data points are connected for clarity. The OM flux is in units of 10-15 erg cm-2 s-1 Å-1, see also Table 2. Note that UVW1 and UVM2 do not cover the same wavelength range (see Sect. 2.1).

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