Fig. 10
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Soft X-ray photons detected by an 5 ksec XMM pointing in the OVΠ band (0.425–0.725 keV) at the position of γ Per (upper left circle) exceed the background count of 3 by statistically significant 7 extra photons. The lower right circle shows a separate, much harder source already detected by a 1990s pointing of ROSAT. The green striped triangle area is the source-free reference field which is used to determine the background.
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