Figure. 1a. Simulated received radiation energy P[x] accumulated (10⁵ histories) from different directions x in a small region of the sky (with x = 0 … 10,000), and with closer sources assumed to be completely opaque to the radiation from more distant ones in the same direction. The corresponding spectrum is shown in Figure 1b to be essentially indistinguishable from an exact Planck spectrum. b. Energy spectrum S[ω] (suitably scaled, with ω = 10 … 100) accumulated (3010⁵ histories) from the received radiation energy P[x] in Figure 1a. The sampled spectrum (black) is seen to be virtually indistinguishable from the Planck spectrum (red) also shown

From

Is CMB just an Observational Effect of a Universe in Accelerated Expansion?

Arne Bergstrom

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