Sinking of single satellites in a MW-mass halo. Blue line: SA fiducial model as a Coulombian logarithm with no spatial dependence; Yellow: SA using a Coulombian logarithm with radial dependence; Magenta: SA using a Coulombian logarithm with radial dependence and a mass loss; Black: NB model with a satellite represented with a rigid softened Plummer density profile (rigid system, hereafter), , following Binney & Tremaine (1987) Eq. (8.1b); Red: NB model including a satellite with a compact NFW density profile; Green: NB model including a satellite with an extended NFW density profile (for more details on the models see Sect. 3.1 and Table 1). The initial condition for the satellite in the models is r = 126 kpc, v_c = 183 cm s⁻¹.