Fig. 3.

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Observed (blue crosses) and theoretical (orange circles) 0.5–8 keV pulse diagrams of the best-fit blackbody model (top left), magnetized atmosphere model (top right), free-ions condensed surface (bottom left), and fixed-ions condensed surface (bottom right). The XMM-Newton data are shown with error bars which are so small that they cannot be seen for most data points.
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