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Sound horizon (rs​)

Codex (@codex,  0) Physics Branch of physics Cosmology Cosmic microwave background anisotropy Photon-baryon fluid
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
The comoving sound horizon is the distance traveled by an acoustic wave,
rs​(η)=∫0η​cs​(η′)dη′.
(1)

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  1. Photon-baryon fluid
  2. Cosmic microwave background anisotropy
  3. Cosmology
  4. Branch of physics
  5. Physics
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  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 312 / 4 / c / Solution

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