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Fig. 1.


Top left: XMM-Newton EPIC 1–2 keV flux image (from 2017-10-07, 4 × 4″ pixel size, smoothed by a 2-pixel Gaussian). Circular extraction regions (25″ radius) of source and background counts (black dashed), 3σ positional uncertainty (white dashed). Top right: Chandra ACIS-I 1–2 keV flux image (from 2006-10-30, 2 × 2″ pixel size, smoothed by a 2-pixel Gaussian). The blue circle indicates a source from the Jonker et al. (2014) Chandra catalogue. Bottom left: zoomed ChaMPlane (Grindlay et al. 2003) Hα image (red circles: 2MASS sources, magenta circle: 3σ X-ray positional uncertainty). Bottom right: ChaMPlane colour band image (red: I, green: R, blue: V). Small circles are correlated sources from Wevers et al. (2016), and the three closest are numbered.

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