Preprint
Jul 2026
Analytical covariances for catalogue-based pseudo-$C_\ell$s
Multiple cosmological observables, such as the galaxy overdensity or cosmic shear, consist of fields sampled at the discrete positions of astrophysical sources. Recent work has presented methods to estimate the angular power spectra of such fields, avoiding the construction of pixelated sky maps and the finite-resoluti...
K. Wolz, E. Farah, R. Reischke et al.
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