Timeline for What forms first: the dark matter halo or the galaxy?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Oct 12, 2017 at 5:01 | comment | added | Kyle Oman | @xavier rae there are specific points which other theories address better because they are specifically made to address exactly those points, but overall LCDM theory is still the best we've got. The possible exception is 'Warm Dark Matter', which is sort of on par at the moment, loosely speaking. | |
| Oct 11, 2017 at 22:04 | comment | added | xavier rae | Thanks for your answer it's helped me considerably. You say the Cold Dark Matter model has it's fair share of glitches,I am curious if there's any specific fault in the theory that other theories might better explain? | |
| Oct 10, 2017 at 23:50 | comment | added | A. C. A. C. | That makes sense. I always wondered why dark matter wouldn't be shaped like a sphere. | |
| Oct 10, 2017 at 23:36 | comment | added | Kyle Oman | @C.A.C. as Peter Shor points out, DM halos are thought to be approximately spherical, with a central concentration (dense in the middle). | |
| Oct 10, 2017 at 21:16 | comment | added | Peter Shor | A dark matter halo really isn't donut-shaped, which you seem to think it is. | |
| Oct 10, 2017 at 21:14 | comment | added | A. C. A. C. | But are the dark matter objects before galaxies formed in the shape of halos? Seems to me like the halos themselves are because the galaxy or does dark matter naturally collect into a halo shape? | |
| Oct 10, 2017 at 7:38 | history | answered | Kyle Oman | CC BY-SA 3.0 |