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Fig. A.1


Left-hand panel: cooling tail in the FL/LEdd vs. K− 1 / 4fc plane with 1σ errors presented by black crosses for a hard-state PRE burst from 4U 1724307 analyzed by Suleimanov et al. (2011b). Best-fit theoretical atmosphere model is shown with the blue curve (SolA001). A PRE burst from the same source (used in the this paper) is also presented with gray crosses and gray curve. Right-hand panel: temperature evolution of the Suleimanov et al. (2011b) burst. Blackbody temperature Tbb is shown for the cooling tail with black crosses. Blue crosses show the color-corrected temperatures Teff(1 + z)-1. The straight inclined lines show a powerlaw with an index of 4 corresponding to the FT4 relation.

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