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Fig. 4.
NICER pulse profiles of IGR J17591−2342, using data collected during segment-1 (MJD 58345–58364), for three different energy bands: 1–3 keV (including truncated Fourier series fit with three harmonics: black), 3–5 keV (orange), and 5–10 keV (red). The shift towards earlier phases of the higher energy profiles is evident.
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