Notes. The main references are indicated next to the source name. is the pulsar’s spin-down power; τ_c its characteristic age; d its distance; and V_psr its projected velocity. d₀ is the bow shock standoff distance; L_{X1 − X2} indicates the X-ray luminosity of the feature in the energy range specified in parentheses; and L_f, w_f, and sin θ_f are the feature’s length, width, and inclination, respectively. For the Lighthouse Nebula, we also report the X-ray luminosity in the 3–79 keV band recently measured by NuSTAR (Klingler et al. 2023). ^( * )The distance is taken from the ATNF catalogue: www.atnf.csiro.au/people/pulsar/psrcat. ^( † )The filament thickness appears to broaden with distance from the pulsar (de Vries & Romani 2022). Limiting the estimate to the first third of the filament, one finds that w_f = 2″, a thickness comparable with Chandra’s resolution.

References. ⁽¹⁾de Vries et al. (2022), ⁽²⁾Deller et al. (2019), ⁽³⁾Chatterjee & Cordes (2002) ⁽⁴⁾Pavan et al. (2014), ⁽⁵⁾Pavan et al. (2016), ⁽⁶⁾Klingler et al. (2023) ⁽⁷⁾de Vries & Romani (2022).