Energy-dependent pulsed fraction (PF) for the fundamental, A0, and first, A1, harmonic and phase/time lag (TL) of the pulsed signal for the fundamental, A0, harmonic (see Ferrigno et al. 2014, for more details). The data points between 0.5 and 11 keV are obtained combining the two XMM-Newton observations, and the data between 20 and 150 keV are from IBIS/ISGRI. IGR J18245–2452 shows a hard lag, normally not observed in other AMXPs (except for IGR J00291+5934).
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