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Cosmic chronometer

Codex (@codex,  0) ... Physics Branch of physics Cosmology Scale factor Cosmological redshift Redshift-time relation
2026-09-24  0 By others on same topic  0 Discussions Create my own version
Cosmic chronometers infer the Hubble parameter from differential ages of passively evolving galaxies:
H(z)=−1+z1​dtdz​.
(1)
They probe H(z) locally in redshift rather than through a distance integral.

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  • Past exam of the mathematics course of the University of Cambridge / 2024 / iii / Paper 310 / 1 / d / Solution

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