3 ms·
Lambda CDM has only 6 free parameters.[0] That's pretty amazing for a theory that explains all of cosmology. 0. https://en.wikipedia.org/wiki/Lambda-CDM_model#
by DiogenesKynikos 4y ago
Lambda CDM has only 6 free parameters.[0] That's pretty amazing for a theory that explains all of cosmology.
0. https://en.wikipedia.org/wiki/Lambda-CDM_model#Parameters https://en.wikipedia.org/wiki/Lambda-CDM_model#Parameters
- naasking 4y agoIt doesn't explain all of cosmology without tuning the distributions of dark matter to reproduce the observations that MOND describes without any parameters aside from visible mass.
- DiogenesKynikos 4y agoThere is only one parameter that tunes the distribution of dark matter, for the entire universe: the spectral index. The spectral index sets the statistics of the overall density distribution in the very early universe. After that, gravity and other physical laws determine the evolution of the universe.
- naasking 4y agoThen this is inconsistent with the recent discovery of galaxies without DM, among other issues. I think you're overstating the consistency of the evidence for DM. I replied with a reference to another of one of your comments.
- Avshalom 4y agoDark matter is statistically distributed, the same as baryonic matter. Galaxies with no dark matter or "too much" dark matter is as consistent as galaxies having different baryonic masses or things like https://en.wikipedia.org/wiki/CfA2_Great_Wall https://en.wikipedia.org/wiki/CfA2_Great_Wall
- lostmsu 4y agoWhy would they be independently distributed?