Fig. 2.

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Exemplary spectra of the XMM-Newton data for phase bin 3 (upper panels, blue data points) and models (upper panels, orange line), that is blackbody model (top left), magnetized atmosphere model (top right), free-ions condensed surface (bottom left), and fixed-ions condensed surface (bottom right). The lower panels show (data-model)/sigma for the spectra above.
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