- #1
Gerinski
- 323
- 15
The Wiki article on the CMB says that recombination lasted for around 115,000 years, from 372,000 years after the BB (when all baryonic matter was in the form of ions) until around 487,000 years after the BB when all electrons had bonded to nuclei. So Thomson scattering gradually decreased from 100% to 0% during this period, or in other words the mean free path of electrons increased gradually during this period.
Does this mean that the CMB is not really a surface but it has a depth of around 115,000 light years, including a mix of photons emitted along this 115,000 years period?
If that is the case, does this have any significant effect in the structure or analysis of the CMB?
https://en.wikipedia.org/wiki/Cosmic_microwave_background
Does this mean that the CMB is not really a surface but it has a depth of around 115,000 light years, including a mix of photons emitted along this 115,000 years period?
If that is the case, does this have any significant effect in the structure or analysis of the CMB?
https://en.wikipedia.org/wiki/Cosmic_microwave_background