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Fig. 2

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Computations of with Dirac selections centered at z ∈ {0.85,1.00,1.15} with Angpow alone and with Angpow and CLASSgal using a Gaussian selection function with mean z = 1, a width of σ = 0.3, and a redshift cut at ± 5σ (in all cases kmax = 0.44 Mpc-1). For Angpow we use the power spectrum produced by CLASSgal and we have varied the redshift grid sampling resolution from 9 × 9 to 159 × 159 points to reach the converged result (blue curve) in good agreement with the CLASSgal result (cyan points). Comparing the to the results we measure the effect of self-cross-correlation inside a thick redshift shell which washes out the matter fluctuation contrast.

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