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That’s not quite right. The theory which MOND is an alternative to is General Relativity. Dark Matter is the name given to the missing mass resulting from our o
by chongli 3y ago
That’s not quite right. The theory which MOND is an alternative to is General Relativity. Dark Matter is the name given to the missing mass resulting from our observations (light we observe directly) not according with mass we infer to exist by GR and the amount of gravitational lensing we observe.
As an aside, MOND is not doing so well these days. One of the leading proponents of MOND has published a paper showing a need for substantial revision to the theory following observations of wide binary stars [1].
[1] https://academic.oup.com/mnras/article/527/3/4573/7342478 https://academic.oup.com/mnras/article/527/3/4573/7342478
- MattPalmer1086 3y agoThat's not quite right either. MOND is not a relativistic theory. The clue is in the name: MOdified Newtonian Dynamics.
- chongli 3y agoIf my reply implied that MOND was a relativistic theory then that was not intentional. From the first paragraph of the introduction to the paper I linked: Our current best understanding of gravity is encapsulated by the theory of General Relativity (GR; Einstein 1915). This reduces to Newtonian dynamics in the weak-field non-relativistic limit...