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MOND is a modification of Newtonian gravity and thus doesn't (yet?) take relativistic corrections into a account (see the last paragraph in [0]). So it's hard t
by codethief 6y ago
MOND is a modification of Newtonian gravity and thus doesn't (yet?) take relativistic corrections into a account (see the last paragraph in [0]). So it's hard to predict what the fully relativistic picture is going to look like. I'm not a MOND theorist, though, so I might be wrong. (There are some relativistic generalizations[1] of MOND but it doesn't appear the MOND community has settled/agreed on one approach yet.)
[0]: https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Outstanding_problems_for_MOND https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Ou...
[1]: https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Relativistic https://en.wikipedia.org/wiki/Modified_Newtonian_dynamics#Re...
- cygx 6y agoThere's conformal gravity, which replaces the Einstein field equations with ones derived from a conformally invariant action. Like MOND, this allows you to fit rotation curves nicely without invoking dark matter, see eg [1][2]. [1] https://arxiv.org/abs/1211.0188 https://arxiv.org/abs/1211.0188 (2012) [2] https://arxiv.org/abs/1812.03152v3 https://arxiv.org/abs/1812.03152v3 (2018)