Fig. 8.

Quasi-equilibrium redshifted luminosity as a function of the average mass accretion rate ⟨Ṁ⟩ for different neutron star masses (coded with color) in the basic neutron-star model. Solid lines show the maximum luminosity for the FZCPHG model of deep crustal heating, dashed lines show the minimum
for the same model, and dotted lines display the results for the HZ’08 accreted crust heating model (both maximum and minimum).
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