3 ms·

LCDM has six parameters, only a few of them are related to the DM distribution. Is that a lot to you or what specifically are you referring to?

• MattPalmer1086 3y ago
  The DM distribution itself is effectively a huge number of parameters. You have to have just the right amount of dark matter distributed differently in each case to explain observations and get those best fits. For example, see: https://en.m.wikipedia.org/wiki/Cuspy_halo_problem https://en.m.wikipedia.org/wiki/Cuspy_halo_problem
  • mr_mitm 3y ago
    Yes, the cuspy halo problem wouldn't be a problem at all if you were to simply adjust the infinite parameters that you suggest that DM has. The fact that there are statistical discrepancies proves my point that no one is adjusting a huge number of parameters.
    • MattPalmer1086 3y ago
      The point is that all kinds of dark matter distribution models are proposed and evaluated to see which one fits best. Again, for example: https://arxiv.org/abs/2001.10538 https://arxiv.org/abs/2001.10538 And they still fail to explain other observations which require additional arguments as to why the dark matter is once again distributed in just the right way to give the rotation curve... that is already successfully predicted by MOND in most cases with just one universal parameter.