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.
The galaxy-optical depth cross-power ¯C τ g ℓ is computed from the model (Eq
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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.