Astronomers chart invisible ocean of dark matter swirling outside the Milky Way

[Admin]

Astronomers are hoping to use the wake of stars to test the existing theories of dark matter.

Astronomers chart invisible ocean of dark matter swirling outside the Milky Way : Read more

 

[rod]

"The group has used their new map and the position of the wake to confirm a theoretical model, created by another group of researchers, about just how dark matter should be distributed across the galactic halo; they are now running tests to see which of the theories about dark matter best fits the wake's shape and location."

It is good to test. Other DM detectors in operation currently come up short. Example, Dark Matter’s Last Stand, https://www.scientificamerican.com/article/dark-matters-last-stand/, April-2021.

 

[Catastrophe]

Dark matter halo - Wikipedia

en.wikipedia.org

Milky Way dark matter halo
The visible disk of the Milky Way Galaxy is thought to be embedded in a much larger, roughly spherical halo of dark matter. The dark matter density drops off with distance from the galactic center. It is now believed that about 95% of the galaxy is composed of dark matter, a type of matter that does not seem to interact with the rest of the galaxy's matter and energy in any way except through gravity. The luminous matter makes up approximately 9×1010 solar masses. The dark matter halo is likely to include around 6×1011 to 3×1012 solar masses of dark matter.[32][33]

I was wondering whether there was DM in the Milky Way.

Cat