Can we explain the bigger speed of rotation of the galaxies from gravitomagnetic field acting from the "inner layers" of the galaxy to the "outer layers" of the galaxy?

  • $\begingroup$ "bigger speed of rotation" -- Bigger than what? $\endgroup$ Aug 10, 2021 at 0:53
  • $\begingroup$ I believe this paper is related to the question: doi.org/10.1140/epjc/s10052-021-08967-3 $\endgroup$ Aug 10, 2021 at 1:00
  • $\begingroup$ bigger speed than the one we calculate using only the gravity of all the stars in the Milky Way $\endgroup$
    – MrV
    Aug 10, 2021 at 1:12
  • $\begingroup$ but it is just a theory correct?if we dont find any WIMP (dark matter candidate) can we say for sure it is due to gravitomagnetism? $\endgroup$
    – MrV
    Aug 10, 2021 at 1:15
  • $\begingroup$ If we dont find any WIMP, there are an ocean of other theories that may possibly explain rotation of galaxies. Disproving A does not prove B. There is currently much more evidence and work supporting the WIMP model, which is only 1 candidate for dark matter. Scientific consensus would currently answer your question with "no, that is due to dark matter, and we would expect gravitomagnetism to have a (v/c)^2 tiny effect." A single paper or a handful of papers are usually wrong, because each individual paper may contain glaring errors. This is why consensus is necessary. $\endgroup$
    – Alwin
    Aug 10, 2021 at 3:57