Fig. 14

Comparison of GX 339-4 (27–36 keV) intensity variations obtained with the “image-space” and the “data-space” algorithms. The common SPI/IBIS database contains 1183 exposures. The “image space” method describes GX 339-4 intensity variations with 17 segments (red) for a of 1.19. The “data-space” method uses 15 segments (blue) and achieves
of 1.20. The GX 339-4 segmented version of the IBIS (26–40 keV) time series is shown in green. The absolute rate normalization between SPI and IBIS is arbitrary.
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