General Relativity: An Introduction for Physicists · Problem 15.4

Cosmological models — Hobson, Efstathiou & Lasenby

Physics · recombination-epoch-time

Problem

The CMB radiation was emitted at the epoch of recombination at redshift zrec≈1500z_{\mathrm{rec}} \approx 1500. Show that trec≈450 000t_{\mathrm{rec}} \approx 450\,000 years.

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