Euclid: Impact of non-linear and baryonic feedback prescriptions on cosmological parameter estimation from weak lensing cosmic shear

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Table 6.

Mean values, marginalised 68% errors, and bias.

		`CH18`			`ST15`			`HD15`
θ	ℓ_max	θ^⋆	σ	B	θ^⋆	σ	B	θ^⋆	σ	B
ω_b, 0	1500	0.2246	0.00011	0.09	0.2245	0.00012	0.00	0.02249	0.00012	0.34
	5000	0.02251	0.00012	0.51	0.02252	0.00012	0.64	0.02252	0.00012	0.56

ω_c, 0	1500	0.12061	0.00035	0.15	0.12059	0.00036	0.08	0.12044	0.00040	0.30
	5000	0.12109	0.00036	1.49	0.12110	0.00037	1.46	0.12083	0.00036	0.76

h	1500	0.6833	0.0069	1.92	0.6799	0.0065	1.52	0.6819	0.0069	1.73
	5000	0.6990	0.0041	7.15	0.7069	0.0041	9.11	0.6835	0.0045	2.99

ln(10¹⁰A_s)	1500	3.0571	0.0087	0.14	3.0590	0.0083	0.07	3.0578	0.0084	0.07
	5000	3.0644	0.0083	0.73	3.0679	0.0087	1.10	3.0592	0.0083	0.10

n_s	1500	0.9583	0.0024	0.68	0.9589	0.0025	0.42	0.9572	0.0025	1.11
	5000	0.9489	0.0020	5.49	0.9488	0.0021	5.44	0.9503	0.0021	4.69

w₀	1500	−1.040	0.078	1.79	−0.990	0.078	1.16	−1.063	0.092	1.77
	5000	−1.220	0.039	8.22	−1.240	0.040	8.43	−1.142	0.053	4.55

w_a	1500	0.43	0.19	1.68	0.30	0.20	0.98	0.51	0.23	1.78
	5000	0.84	0.09	8.27	0.84	0.10	7.70	0.73	0.13	5.04

Δχ²	1500	6.35			3.94			11.54
	5000	63.61			107.32			45.05

Notes. The values are obtained by fitting mock Planck and Euclid cosmic shear data with Halofit without baryonic corrections, to non-linear corrections with either CH18, ST15 or HD15 methods non-linear corrections. The number of degrees of freedom in this case is 11 (the number of free parameters), which enables one to compare Δχ² to the corresponding confidence interval.

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