Sachs-Wolfe effect (source code)

= Sachs-Wolfe effect
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The Sachs-Wolfe effect is the large-angle CMB temperature anisotropy produced by intrinsic photon-temperature perturbations and gravitational redshift at last scattering. For an adiabatic mode during matter domination, $\Theta_0+\Psi=\Psi/3$ on superhorizon scales.