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Dark matter

  1. Apr 30, 2007 #1
    I'm doing a project on dark matter and i've found some good information but I still haven't found any related mathematical equations.. are there any not to complicated ones i can relate to it??
  2. jcsd
  3. May 1, 2007 #2


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    What sort of equations are you looking for? Dark matter is subject to gravity, but nothing else is really known about it.
  4. May 1, 2007 #3


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    The most relevant equations would be the derivation of the rotation curve for a galaxy of a given density profile, but the graphical representation of these curves for Baryons only and Baryons + Dark Matter might be a more accessible and equally informative for you. There is a graph and some info on the http://en.wikipedia.org/wiki/Rotation_curves" [Broken] site, but I'm sure a quick Google search would pull up a fair bit of info as well, once you read this and know what you are looking for.

    Good luck with your project :smile:
    Last edited by a moderator: May 2, 2017
  5. May 2, 2007 #4


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    Using math not terribly more complex than Keplers laws you can calculate how much uniformly distributed, unseen [dark] matter can exist within the confines of our solar system without messing up planetary orbits [Hints: [1] virial theorem; [2] its less than the mass of Jupiter].
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