Fig. 2.

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(a) Lomb-Scargle and (b) CLEANed power spectra of IGR1654. From top to bottom, the panels show the X-ray power spectra obtained for the epoch 16 March 2019 of the NuSTAR observation in the 3–78 keV, 3–6 keV, 6–10 keV, and 10–30 keV energy bands, respectively. The red horizontal dotted lines represent the 95% confidence level.
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