Breaking the baryon-dark matter degeneracy in a model-independent way through the Sunyaev-Zeldovich effect

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Volume 686 (June 2024)

A&A, 686 (2024) A30

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Table 4.

Best-fit parameters with 1σ (2σ) error bars obtained from the MCMC analysis based on the Bézier interpolation of this work, compared to the flat and nonflat ΛCDM best-fit parameters (Planck Collaboration VI 2020).

	α₀ ≡ h₀	α_1, 2	Ω_k	ω_b	ω_m
This work	$0 . 694_{- 0.035 (- 0.055)}^{+ 0.032 (+ 0.054)}$ $0.694_{-0.035\,(-0.055)}^{+0.032\,(+0.054)}$	$1 . 073_{- 0.077 (- 0.123)}^{+ 0.088 (+ 0.140)}$ $1.073_{-0.077\,(-0.123)}^{+0.088\,(+0.140)}$	$- 0 . 08_{- 0.52 (- 0.77)}^{+ 0.52 (+ 0.84)}$ $-0.08_{-0.52\,(-0.77)}^{+0.52\,(+0.84)}$	$0 . 0236_{- 0.0058 (- 0.0089)}^{+ 0.0069 (+ 0.0118)}$ $0.0236_{-0.0058\,(-0.0089)}^{+0.0069\,(+0.0118)}$	$0 . 147_{- 0.020 (- 0.031)}^{+ 0.021 (+ 0.034)}$ $0.147_{-0.020\,(-0.031)}^{+0.021\,(+0.034)}$
		$1 . 973_{- 0.076 (- 0.122)}^{+ 0.079 (+ 0.132)}$ $1.973_{-0.076\,(-0.122)}^{+0.079\,(+0.132)}$
ΛCDM	$0 . 6736_{- 0.0054}^{+ 0.0054}$ $0.6736^{+0.0054}_{-0.0054}$	–	–	$0 . 02237_{- 0.00015}^{+ 0.00015}$ $0.02237^{+0.00015}_{-0.00015}$	$0 . 1430_{- 0.0011}^{+ 0.0011}$ $0.1430^{+0.0011}_{-0.0011}$
ΛCDM (non-flat)	$0 . 636_{- 0.023}^{+ 0.021}$ $0.636^{+0.021}_{-0.023}$	–	$- 0 . 011_{- 0.012}^{+ 0.013}$ $-0.011^{+0.013}_{-0.012}$	$0 . 02249_{- 0.00016}^{+ 0.00016}$ $0.02249^{+0.00016}_{-0.00016}$	$0 . 14099_{- 0.0015}^{+ 0.0015}$ $0.14099^{+0.0015}_{-0.0015}$

Notes. In the nonflat ΛCDM case, a) Ω_k is quoted at 95% limits and the other parameters at 68% limits (Planck Collaboration VI 2020). b) The value of ω_m is calculated by summing ω_b with the density of cold dark matter, i.e., $ω_{c} = 0 . 1185_{- 0.0015}^{+ 0.0015}$ $\omega_c = 0.1185^{+0.0015}_{-0.0015}$ , and the attached error as the root sum of the squares of the errors on ω_b and ω_c (Planck Collaboration VI 2020).

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