Covariance of cross-correlations : towards efficient measures for large-scale structure

Abstract

We study the covariance of the cross-power spectrum of different tracers for the largescale structure. We develop the counts-in-cells framework for the multi-tracer approach, and use this to derive expressions for the full non-Gaussian covariance matrix. We show, that for the usual auto-power statistic, besides the off-diagonal covariance generated through… (More)

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