Fig. 1
Light curves of the 2014 October 10 outburst of IGR J17544 −2619. a) BAT (14−150 keV, 10 s binning): the red horizontal line marks the XRT data span; b) XRT soft band (0.3−2 keV, at 30 counts bin-1); c) XRT hard band (2−10 keV, at 30 counts bin-1); d) XRT hardness ratio (2−10 keV/0.3−2 keV). The dashed vertical lines mark the time selections for BAT and XRT spectroscopy (Sect. 3.1).
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