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Fig. 1.

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Chandra ACIS-S 0.5−7.0 keV imaging of NGC 4258. Left: green box labels the extraction region of the soft, diffuse emission, while the red dashed box marks the size of the zoomed inset in the right panel. Right: zoom-in on the nuclear region with the off-nuclear source clearly visible. Its spectrum has been extracted from the green circular region. The red dashed box marks the corresponding size of the zoomed inset in the left panel. In both panels, north is up and east to the left.

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