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Fig. 2.
Planck opacity (kP, black) and radiative losses in non-LTE (LNLTE, red) at the density of the accretion column (i.e., n = 1011 cm−3) vs. temperature. For comparison, the figure also shows the radiative losses from optically thin plasma (Lthin, blue) used in models available in the literature (e.g., Sacco et al. 2008).
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