Figure 4.

Growth of f_E as a function of θ_max,R ∈ {0, θ_∞} illustrated for six values of R₀ between 0.1–0.35 at fixed i for the scenario where the shock is around the companion. The curves terminate at θ_∞, resulting in a maximum f_E < 0.5 for a prescribed R₀ and i. The flat portions at low θ_max,R for i = 85° and 90° are due to the companion of R_* ≈ 0:1 eclipsing the MSP. Radio observations from Ryba & Taylor (1991) are illustrated with the horizontal dashed lines. Interpretations are discussed in the text.