Fig. 7

“Image-space” method applied to GRS 1915+105. The intensity variations as a function of the exposure number are shown in the 27–36, 49–66, 90–121 and 163–220 keV band as indicated in the figure. The different bands are translated on-to the y-axis (the intensities are in arbitrary units). The SPI segments are plotted in red and the IBIS time series (scaled S/N) are drawn in gray (26–40, 51–63, 105–150, and 150–250 keV). The number of “time bins” deduced from the time series segmentation are 174, 50, 8, and 1. The global normalization factor in each energy band between the fluxes of the two instruments is arbitrary.
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