Question

what is the radial extent of the last scattering “shell”?

Answer 1

LAST SCATTERING SURFACE. Adapted from P. Coles, 1999, The Routledge Critical Dictionary of the New Cosmology, Routledge Inc

Answer 2

In the last lecture we showed that the density of matter evolves as: Set a0=1. ... We show that the redshift is directly related to the scale factor ... we choose a radial null geodesic so that dθ = dφ = 0, so that.