Fig. 2.
Chandra ACIS-S and XMM-Newton EPIC-PN light curves of NGC 5055 X-1 for the three observations at different epochs (observation IDs are indicated in each panel). Soft 0.3–3 keV and hard 3–10 keV energy band light curves are shown in the upper and middle panels, respectively, while the bottom panels show the hardness ratios for each set of data. All the light curves are re-binned with bin size 500 s to have higher S/N. The zero times in the plots correspond to 2001-08-27 02:13:48, 2007-05-28 07:59:14, and 2007-06-19 10:56:29 for panels from left to right, respectively.
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