A null test of BNT-transformed cosmic shear cross-spectra can constrain Omega_m and w0 geometrically, but requires photometric redshifts known to about 10^-3 and is subdominant to standard 3x2pt analysis.
The binning is opti- mized for different values of the photometric redshift uncer- taintyσz
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Cosmic shear nulling as a geometrical cosmological probe: Methodology and sensitivity to cosmological parameters and systematics
A null test of BNT-transformed cosmic shear cross-spectra can constrain Omega_m and w0 geometrically, but requires photometric redshifts known to about 10^-3 and is subdominant to standard 3x2pt analysis.