Status and Future Plans for CMB Measurements

CMB (cosmic microwave background) science goals require much improved CMB polarization and CMB-lensing:
– Inflation: B-mode polarization and de-lensing
– Neutrinos: Neff or “dark radiation” requires de-lensed polarization spectra; ∑mν requires CMB-lensing (and τe).
– Dark Energy: CMB-lensing correlations with galaxy surveys; CMB-lensing cluster calibration for SZ cosmology

and CMB-lensing requires much improved CMB polarization.

The European space agencies Planck satellite provided polarized maps at 7 frequencies.

Here are excerpts from a 52-page report made in 2017 on the work to create more detailed measurements of the CMB.

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