- #1
binbagsss
- 1,265
- 11
I have that the energy density of matter approx 0.3 , so this is measured by galaxy motion / gravitational lensing etc, that's fine.
I have that the energy density due to the vacuum is 0.7, so this is measured by the expansion rate- the common suspect being dark energy.
I have radiation contribution approx 10^{-4}. How is this measured? Or is this theoretical?
Thanks
I have that the energy density due to the vacuum is 0.7, so this is measured by the expansion rate- the common suspect being dark energy.
I have radiation contribution approx 10^{-4}. How is this measured? Or is this theoretical?
Thanks