Longitudinal component of the magnetic pressure and magnetic tension forces, and . (a,b) and for the initial BMR for the case 1, respectively. The cross-sections at θ = θ^* are shown. (c,d) The same as panels (a) and (b) for the case 3. (e) Ratio between the maximum amplitudes of and at the surface (r = 0.985 R_⊙) with different combinations of the model parameters, Δr_bmr and Δϕ_bmr. The parameters used in cases 1–3 are denoted by red, green, and blue circles. The white dotted line represents the contour line of unity.