Characterisation of the stellar wind in Cyg X-1 via modelling of colour-colour diagrams

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Volume 691 (November 2024)

A&A, 691 (2024) A78

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Table A.1.

Best-fit parameters of the continuum model.

	Component	Parameter	Value
ISM absorption	`TBabs`	N_H (10²²cm⁻²)	$0 . 79_{- 0.02}^{+ 0.01}$ $0.79_{-0.02}^{+0.01}$

`continuum`	`diskbb`	kT_bb (keV)	< 0.14
	`nthComp`	Γ	< 5.9
		kT_e (keV)	> 0.67
	`relxillCp`	R_in (R_g)	13.24 ± 1.26
		Γ	1.59 ± 0.01
		log₁₀ξ	3.32 ± 0.01
		A_Fe	$1 . 01_{- 0.02}^{+ 0.05}$ $1.01_{-0.02}^{+0.05}$
		ℛ	$0 . 52_{- 0.03}^{+ 0.01}$ $0.52_{-0.03}^{+0.01}$

`absorption features`	`gau1`	E_l (keV)	1.44 ± 0.01
	`gau2`	E_l (keV)	2.40 ± 0.01

`emission features`	`gau3`	E_l (keV)	6.36 ± 0.01
	`gau4`	E_l (keV)	0.52 ± 0.01
	`gau5`	E_l (keV)	0.86 ± 0.01
	`gau6`	E_l (keV)	1.05 ± 0.01

Notes. Best-fit parameters were obtained from the fit of the NWA spectrum of observation 201. The errors are reported at the 90% confidence level, i.e. Δχ² = 2.71.

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