Initial gas density profiles of the SE cluster for different models of the radial gas distribution. The Br profile refers to the Burkert profile (Eq. (9)), with the gas core radius set to r_c = r_s/3 and r_s the NFW scale radius (Eq. (4)). This is the initial gas density profile of the SE cluster previously adopted in all of the merger simulations. The label Vk generically refers to the Vikhlinin et al. (2006) gas density profile described by the form (28), different curves are for different settings of the profile parameters . The radii and are in units of a_s, the scale radius of the generalized sNFW profile (Eq. (29)). All of the profiles are normalized to at r = r₂₀₀, as in model XDBf_sb of Table 7.