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Analytical eclipse fraction fE growth curves for any DP IC-centered system where the shock surrounds the pulsar, given by Eq. (13), are shown highlighting the constrained inclination of J1023+0038 in the green to purple curves. The red horizontal lines illustrate typically observed asymmetric total fE from Archibald et al. (2009, 2013). The dark yellow vertical lines show the maximum R0 that may accommodate the asymptotic shock opening angle θ∞ for the specific geometry of Eq (6).
