Panel a: regions used for the spatially resolved spectral analysis. Red circles are likely point sources excluded from the extraction regions. The circle inside box 1 was used to exclude the emission of the pulsar from the surrounding diffuse emission. Panel b: MOS1 (black) and MOS2 (red) spectra of the bar in the 1–7 keV band. The solid lines represent the best fit for an absorbed power-law model.