On the relationship between MOND and DM

Details On the relationship between MOND and DM On the relationship between MOND and DM

2004-01-28

arxiv.org/abs/astro-ph/0401591v1

Astrophys.J. 604 (2004) L37-L40

Astronomy and Astrophysics

Astrophysics

5 pages, accepted for publication in Astrophys. J. Letters

Scientific paper

10.1086/382697

Numerous astrophysical observations have shown that classical Newtonian dynamics fails on galactic scales and beyond, if only visible matter is taken into account. The two most popular theoretical concepts dealing with this problem are Dark Matter (DM) and Modified Newtonian Dynamics (MOND). In the first part of this paper it is demonstrated that a generalized MOND equation can be derived in the framework of Newtonian Dark Matter theory. For systems satisfying a fixed relationship between the gravitational fields caused by DM and visible matter, this generalized MOND equation reduces to the traditional MOND law, first postulated by Milgrom. Therefore, we come to the conclusion that traditional MOND can also be interpreted as special limit case of DM theory. In the second part, a formal derivation of the Tully-Fisher relation is discussed.

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