Modified Newtonian dynamics: Difference between revisions

Since Milgrom's original proposal, MOND has seen scattered successes. It is capable of explaining several observations in galaxy dynamics,<ref name="tale of two paradigms">{{Cite journal |last = McGaugh |first = S. |title = A Tale of Two Paradigms: the Mutual Incommensurability of LCDM and MOND |date=2015 |arxiv = 1404.7525 |bibcode = 2015CaJPh..93..250M |doi = 10.1139/cjp-2014-0203 |volume=93 |issue = 2 |journal=Canadian Journal of Physics |pages=250–259| s2cid = 51822163 }}</ref><ref>{{cite journal |author=Kroupa, P. |author2=Pawlowski, M. |author3=Milgrom, M. |year=2012 |title=The failures of the standard model of cosmology require a new paradigm |journal=International Journal of Modern Physics |volume=21 |issue=14 |page= 1230003 |doi=10.1142/S0218271812300030|arxiv=1301.3907 |bibcode= 2012IJMPD..2130003K|s2cid=118461811 }}</ref> some of which can be difficult for Lambda-CDM to explain.<ref>See for example [https://iopscience.iop.org/article/10.3847/1538-4357/abbb96]</ref> However, MOND struggles to explain a range of other observations, such as the acoustic peaks of the [[cosmic microwave background]] and the [[Bullet cluster]]; furthermore, because MOND is not a relativistic theory, it struggles to explain relativistic effects such as [[gravitational lensing]] and [[gravitational waves]]. Finally, a major weakness of MOND is that galaxy clusters show a residual mass discrepancy even when analyzed using MOND.<ref name = "tale of two paradigms"/><ref name="Milgrom Scholarpedia">Mordehai, M. (2014) "The MOND paradigm of modified dynamics". [http://www.scholarpedia.org/article/The_MOND_paradigm_of_modified_dynamics#Galaxy_clusters ''Scholarpedia'', 9(6):31410.]</ref>

 

 

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