The Sachs-Wolfe Effect
classification
🌌 astro-ph
keywords
effectfluctuationsgravitationalsachs-wolfetemperaturearisesbackgroundcancellation
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We present a pedagogical derivation of the Sachs-Wolfe effect, specifically the factor 1/3 relating the temperature fluctuations to gravitational potentials. The result arises from a cancellation between gravitational redshifts and intrinsic temperature fluctuations which can be derived from a coordinate transformation of the background.
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