Image of the central field of M 31 over-plotted with the positions of six possible transient sources (red) and the sources of the XMM LP-total catalogue. Sources r2-15 and r3-71 are listed as sources #17 and #28, respectively, in Di Stefano et al. (2002). The three “red” sources that are only marked with a number (#58, #65, #82) are taken from Voss & Gilfanov (2007).
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