Forecasts show that CMB and galaxy lensing bispectra improve parameter constraints over power spectra alone for stage-4 surveys, with strong synergy between the two probes especially on neutrino mass when using weak priors.
Detection of the CMB lensing – galaxy bispectrum
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Quadratic estimator reconstructs kSZ remote dipole from Planck and unWISE data with S/N of order unity, constrains multiplicative optical depth bias b_v < 1.04 at 68% confidence after foreground cleaning.
citing papers explorer
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Future Parameter Constraints from Weak Lensing CMB and Galaxy Lensing Power- and Bispectra
Forecasts show that CMB and galaxy lensing bispectra improve parameter constraints over power spectra alone for stage-4 surveys, with strong synergy between the two probes especially on neutrino mass when using weak priors.
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Kinetic Sunyaev Zel'dovich velocity reconstruction from Planck and unWISE
Quadratic estimator reconstructs kSZ remote dipole from Planck and unWISE data with S/N of order unity, constrains multiplicative optical depth bias b_v < 1.04 at 68% confidence after foreground cleaning.