Comparison of a simulated transit light curve with quadratic limb darkening (as per Mandel & Agol 2002; solid curve) with the approximation (dashed line). The planet is assumed to have a radius of 1% the stellar radius, roughly corresponding to an Earth-sized planet around a sun-like star. The stellar limb darkening parameters are arbitrarily set to a = 0.4 and b = 0.4 and the transit impact parameter is set to p = 0. The overshoot indicated by the arrow refers to oLC as defined in Eq. (1).
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