Explain the transverse velocity excess of black widows relative to redbacks

Determine the physical origin of the higher average transverse velocities observed for black widow millisecond pulsars compared to redbacks, distinguishing among supernova kick distributions, evolutionary pathways, and potential spider stellar engine dynamics.

Background

Empirical studies indicate that black widows have higher average transverse velocities than redbacks, a pattern that is not straightforward to explain astrophysically.

The authors highlight this as a poorly understood observation, inviting targeted analysis to identify underlying causes.