Directional stacking signals are reconstructed without information loss as cross-power spectra between the target field and the E/B modes of the spin field weighted by galaxy density.
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Estimators from squeezed bispectrum and collapsed trispectrum recover unbiased small-scale matter power spectrum covariance at the percent level using 25 Quijote simulations.
The improved Narrow Kernel Approximation fails to match simulation-based covariances for real-space cosmic shear 2PCF under survey masks due to off-diagonal harmonic-space errors, while the weighted quartic-counts method agrees better.
citing papers explorer
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Dipoles for everyone: the pseudo-$C_\ell$ approach to directional stacking
Directional stacking signals are reconstructed without information loss as cross-power spectra between the target field and the E/B modes of the spin field weighted by galaxy density.
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If at First You Don't Succeed, Trispectrum: I. Estimating the Matter Power Spectrum Covariance with Higher-Order Statistics
Estimators from squeezed bispectrum and collapsed trispectrum recover unbiased small-scale matter power spectrum covariance at the percent level using 25 Quijote simulations.
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Analytical method for computing the covariance matrix of cosmic shear two-point correlation function
The improved Narrow Kernel Approximation fails to match simulation-based covariances for real-space cosmic shear 2PCF under survey masks due to off-diagonal harmonic-space errors, while the weighted quartic-counts method agrees better.