Do time delay effects explain galactic velocity profiles?
Astrophysics of Galaxies
2026-04-21 v1 Mathematical Physics
math.MP
Abstract
Using the gravitoelectromagnetic analogy for weak gravitational fields, we critique explanations of galactic velocity profiles that invoke time delay effects (i.e. "retarded gravity"). For isotropic, time-dependent matter currents, we show within this framework that the force exerted on an orbiting body is Newtonian and due only to the instantaneous ambient matter configuration -- there are no time delay effects in such situations.
Keywords
Cite
@article{arxiv.2604.18132,
title = {Do time delay effects explain galactic velocity profiles?},
author = {L. Benkoula and K. Chima and J. Kingsbury and K. Marroquin and M. Yim and T. Curtright},
journal= {arXiv preprint arXiv:2604.18132},
year = {2026}
}