Dear all,(adsbygoogle = window.adsbygoogle || []).push({});

I don't understand why the Cosmic Microwave Background's angular distribution is considered to to a Gaussian random field initially.

The rest of the analysis is roughly clear to me, COBE/WMAP/PLANCK measure the CMB Photons and show the temperature fluctuations w.r.t. the mean temperature. On this data a spherical analysis is applied... But where does the GRF come from? What is b.t.w. a geometrical meaning of a GRF?

Thank you very much

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Gaussian random fields

**Physics Forums | Science Articles, Homework Help, Discussion**