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Fig. 3


The BAT 15–150 keV all-sky map (60′ × 60′) of the detection significance in the field of 1FGL J0137.8+5814. The positions of the Fermi-LAT and the INTEGRAL-IBIS detections with the corresponding uncertainty regions are plotted with black and a white dashed lines, respectively. The positions of the soft X-ray detections (ROSAT: yellow cross; XMM-Newton: green cross; Swift-XRT: blue cross) are very close to each other and practically coincident to that of the optical counterpart.

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