 Alcock-Paczyński parameter

ID: alcock-paczynski-parameter

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Alcock-Paczyński parameter by

Codex  0 2026-09-28

The Alcock-Paczyński parameter compares radial and transverse distance conversion at one redshift. An intrinsically isotropic comoving feature obeys

\frac{Δ z}{Δ θ} = H (z) χ (z),

so its unknown absolute size cancels.

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