A new magnitude–redshift relation based on Type Ia supernovae

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Table 4.

Values of q₀ for different magnitude–redshift relations.

Relation	DES-SN5YR	Pantheon+ (z < 1.121)
	q₀	q₀
Empirical	$- 0 . 422_{- 0.019}^{+ 0.019}$ $Mathematical equation: $ -0.422_{-0.019}^{+0.019} $$	$- 0 . 442_{- 0.024}^{+ 0.024}$ $Mathematical equation: $ -0.442_{-0.024}^{+0.024} $$
Flat ΛCDM	$- 0 . 475_{- 0.025}^{+ 0.026}$ $Mathematical equation: $ -0.475_{-0.025}^{+0.026} $$	$- 0 . 496_{- 0.028}^{+ 0.030}$ $Mathematical equation: $ -0.496_{-0.028}^{+0.030} $$
ΛCDM	$- 0 . 417_{- 0.067}^{+ 0.077}$ $Mathematical equation: $ -0.417_{-0.067}^{+0.077} $$	$- 0 . 478_{- 0.071}^{+ 0.081}$ $Mathematical equation: $ -0.478_{-0.071}^{+0.081} $$
Flat wCDM	$- 0 . 392_{- 0.074}^{+ 0.076}$ $Mathematical equation: $ -0.392_{-0.074}^{+0.076} $$	$- 0 . 483_{- 0.092}^{+ 0.096}$ $Mathematical equation: $ -0.483_{-0.092}^{+0.096} $$
Padé	$- 0 . 396_{- 0.112}^{+ 0.072}$ $Mathematical equation: $ -0.396_{-0.112}^{+0.072} $$	$- 0 . 505_{- 0.136}^{+ 0.082}$ $Mathematical equation: $ -0.505_{-0.136}^{+0.082} $$
Flat Padé	$- 0 . 441_{- 0.023}^{+ 0.025}$ $Mathematical equation: $ -0.441_{-0.023}^{+0.025} $$	$- 0 . 468_{- 0.027}^{+ 0.028}$ $Mathematical equation: $ -0.468_{-0.027}^{+0.028} $$

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