Disk galaxy rotation curves and dark matter distribution

Details Disk galaxy rotation curves and dark matter distribution Disk galaxy rotation curves and dark matter distribution

2007-03-16

arxiv.org/abs/astro-ph/0703430v7

25th Apr 2008 Current Science 94(8) 960 & 986to95

Astronomy and Astrophysics

Astrophysics

20 pp, 14 figs; based on pedagogic/didactic seminar given by DGB at Graduate College "High Energy & Particle Astrophysics" at

Scientific paper

After explaining the motivation for this article, I briefly recapitulate the methods used to determine, somewhat coarsely, the rotation curves of our Milky Way Galaxy and other spiral galaxies, especially in their outer parts, and the results of applying these methods. Recent observations and models of the very inner central parts of galaxian rotation curves are only briefly described. I then present the essential Newtonian theory of (disk) galaxy rotation curves. The next two sections present two numerical simulation schemes and brief results. Application of modified Newtonian dynamics to the outer parts of disk galaxies is then described. Finally, attempts to apply Einsteinian general relativity to the dynamics are summarized. The article ends with a summary and prospects for further work in this area.

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