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Fig. 2
Spectra of GRO J1008−57 obtained by Swift/XRT in different luminosity states: the brightest state of the January 2016 outburst (ObsId 00031030028; red circles), the transiting luminosity (ObsId 00031030035; blue squares), and deep inside the stable low-level state (ObsIds 00031030066-85; magenta crosses).
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