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Fig. 1

image

Two EPIC PN exposures in the energy band 0.2−10.0 keV, centered on the position of the X-ray detection associated with ISO-Oph 85 (lines, , , each one 1 ks long, taken few thousands of seconds apart. The reference position for ISO-Oph 85 (HST/NICMOS position from Allen et al. 2002) is 2.2′′ away. These are the images extracted during the EXTraS feasibility study, from which the X-ray emission was recognised as transient. In the left image, the source is visible, while in the right image, it is not. Other transients are visible in the left side of the field. This will be the subject of a future systematic study.

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