Comparison of radial temperature profiles of the accretion disk surrounding the gainer. The dotted line is the profile obtained by Mennickent & Djurašević (2013), and the dashed line is mean temperature of the two-temperature model developed by Linnell (2000). The red line represents the best-fitting power-law radial temperature profile (solution slab/pl in Table 9), and the red belt all plausible solutions given by the uncertainty of the inner rim temperature and the exponent of the power-law, and the red point position of photosphere (τ = 2/3), where temperature T_ph. = 7 192 K is reached. The blue line represents the best-fitting steady-disk radial temperature profile (solution slab/sd in Table 9), the blue belt all plausible solutions given by uncertainty in the inner rim temperature, and the blue point position of photosphere (τ = 2/3), where temperature Tph: = 7 192 K K is reached. The photospheric temperatures were computed for a line of sight in the plane z = 0 and piercing through center of the accretion disk