Unfolded (against a constant model fixed at 1) 2 − 10 keV EPIC-pn spectra (upper panel) extracted in the time interval t ∼ 82 − 94 ks, catching the passage at superior conjunction. The chosen RAWX selections for each spectrum are reported in the labels. The softening of the spectra suggests that there is contribution from a dust-scattering halo, easily noticeable in the ratios of the unfolded spectra (bottom panel).