Components of the Milky Way. The light from galaxies is centrally concentrated. But is the mass also centrally concentrated? Does Mass follow Light in Galaxies?. Examples of Rotation Curves. Expected Versus Observed Rotation Curves for Our Galaxy.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
The light from galaxies is centrally concentrated. But is the mass also centrally concentrated?
Does Mass follow Light in Galaxies?
The “Mass Size of the Galaxy is 10 times larger (1000 times more volume) than the “Light Size” of the galaxy this seems weird?
Shouldn’t there be “DarkGalaxies” appearance of light (baryons) in the DM halo is random?
NGC 4697 optical
NGC 4697 Chandra
Need enough gravity
to keep the X-ray gas
from “boiling off” into
Dark Matter is material that emits low light per unit mass
The Coma Cluster
What about ordinary low mass stars: Clearly ruled out by Space Telescope observations. Left picture shows simulation if these stars dominate stellar clusters at the level required for being DM candidates observations strongly fail to confirm their existence at the required number density.
Length of the lensing event is determined by the mass of the lensing object.