Cosmological inference including massive neutrinos from the matter power spectrum: Biases induced by uncertainties in the covariance matrix

Open Access

Table 3.

Best fit dispersion and its reduction with NERCOME. The two rows on the top present the dispersion of the best fit relative to the error estimated with the true covariance and the last row presents the reduction of the best-fit variance thanks to NERCOME.

	ω_b	ω_cdm	h	m_ν
Best-fit dispersion for `S45`: $\sqrt{Var [\hat{θ}]} / σ_{θ}$ $\sqrt{\mathrm{Var}\left[\hat{\theta}\right]}/\sigma_{\theta}$ [%]	129.6	123.5	129.7	138.9
Best-fit dispersion for `N45`: $\sqrt{Var [\hat{θ}]} / σ_{θ}$ $\sqrt{\mathrm{Var}\left[\hat{\theta}\right]}/\sigma_{\theta}$ [%]	82.9	60.9	71.6	67.1
Reduction of the best-fit dispersion: `N45`/`S45` – 1 [%]	−36.0	−50.7	−44.8	−51.7

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