Cartoon showing both the magnetospheric geometry inferred from the X-ray pulsations by R19 and the geometry inferred from γ-ray/radio pulsations by Johnson et al. (2014). In the work of Johnson et al. (2014) α is the angle between the spin and dipole magnetic axes, and ζ is the angle between the spin axis and the observer’s LOS (Earth direction). For the VRD magnetic field configuration employed by Johnson et al. (2014), polar caps are antipodal. The location of the outer gaps—across which the heating may occur—are crudely rendered as blue rings, disregarding the gap thickness and small offset/shape distortions caused by rotational sweepback of the field lines. For R19, i marks the Earth inclination (denoted as ζ in Johnson et al. 2014). The colatitudes of the hot regions in R19 (shaded with red color) are marked as: Θp for the center of the circular hot spot; and θ for a fiducial point in the thickest segment of the hot crescent (see Figure 3). For both R19 and Johnson et al. (2014) two equatorially reflection-symmetric configurations of emission and observer are possible; here we choose the LOS to be in the northern rotational hemisphere. The longitudinal offset between the geometries of R19 and Johnson et al. (2014) is arbitrary.