Euclid and KiDS-1000: Quantifying the impact of source-lens clustering on cosmic shear analyses

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Table 4.

Maxima of marginal posteriors with 1σ uncertainties, MAP, and shifts due to SLC for the KiDS-like set-up with fixed nuisance parameters.

Parameter	Truth	max. + marginal σ			MAP
		clustered	unclustered	Δ/σ	clustered	unclustered	Δ_MAP
Ω_c h² [10⁻³]	101	$72_{- 18}^{+ 29}$ $72_{-18}^{+29}$	$80_{- 25}^{+ 36}$ $80_{-25}^{+36}$	−0.34	98.0	107.3	−9.3
Ω_b h² [10⁻⁴]	216	$391_{- 119}^{+ 72}$ $391_{-119}^{+72}$	$408_{- 130}^{+ 61}$ $408_{-130}^{+61}$	−0.18	252	252	0
h	0.700	$0 . 749_{- 0.064}^{+ 0.047}$ $0.749_{-0.064}^{+0.047}$	0.734 ± 0.055	0.27	0.660	0.654	0.06
n_s	0.95	$0 . 893_{- 0.047}^{+ 0.084}$ $0.893_{-0.047}^{+0.084}$	$0 . 892_{- 0.046}^{+ 0.084}$ $0.892_{-0.046}^{+0.084}$	0.015	0.906	0.905	0.01
S₈ [10⁻³]	730	$734_{- 12}^{11}$ $734_{-12}^{11}$	$729_{- 14}^{+ 13}$ $729_{-14}^{+13}$	0.42	735	732	3

σ₈ [10⁻³]	800	$877_{- 102}^{+ 94}$ $877_{-102}^{+94}$	$840_{- 120}^{+ 100}$ $840_{-120}^{+100}$	0.38	921	862	59
A_s [10⁻¹⁰]	21	$43_{- 27}^{+ 41}$ $43_{-27}^{+41}$	$30_{- 23}^{+ 36}$ $30_{-23}^{+36}$	0.38	81	57	24
Ω_m [10⁻³]	250	$206_{- 44}^{+ 53}$ $206_{-44}^{+53}$	$221_{- 50}^{+ 69}$ $221_{-50}^{+69}$	−0.31	191	216	−25

Notes. Columns defined as in Table 3.

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