Winds of change: The nuclear and galaxy-scale outflows and the X-ray variability of 2MASS 0918+2117

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Volume 686 (June 2024)

A&A, 686 (2024) A217

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Table 6.

Values for best-fit continuum models for the six observations analyzed to build the light curve.

Observation	Component	Parameter	Value	Units
Chandra – 2001	ZTBABS	N_H	< 3.6 × 10²¹	cm⁻²
	POWERLAW	Photon index	1.8 ± 0.4	–
		Normalization	$1 . 75_{- 0.6}^{+ 0.9} \times 10^{- 4}$ $1.75^{+0.9}_{-0.6} \times 10^{-4}$	photon keV⁻¹ cm⁻² s⁻¹

XMM – 2003	TBPCF	N_H	$6 . 4_{- 2.0}^{+ 4.2} \times 10^{22}$ $6.4^{+4.2}_{-2.0} \times 10^{22}$	cm⁻²
		Covering fraction	$0 . 76_{- 0.17}^{+ 0.1}$ $0.76^{+0.1}_{-0.17}$	–
	POWERLAW	Photon index	2.03 ± 0.14	–
		Normalization	(1.4 ± 0.2)×10⁻⁴	photon keV⁻¹ cm⁻² s⁻¹

eRASS1	TBPCF	N_H	–	cm⁻²
		Covering fraction	0.8	–
	POWERLAW	Photon index	1.94 ± 0.24	–
		Normalization	$1 . 6_{- 1.1}^{+ 2.8} \times 10^{- 4}$ $1.6^{+2.8}_{-1.1} \times 10^{-4}$	photon keV⁻¹ cm⁻² s⁻¹-

eRASS2	TBPCF	N_H	–	cm⁻²
		Covering fraction	0.8	–
	POWERLAW	Photon index	$1 . 94_{- 0.25}^{+ 0.23}$ $1.94^{+0.23}_{-0.25}$	–
		Normalization	< 1 × 10⁻⁴	photon keV⁻¹ cm⁻² s⁻¹

eRASS3	TBPCF	N_H	–	cm⁻²
		Covering fraction	0.8	–
	POWERLAW	Photon index	$2 . 00_{- 0.25}^{+ 0.23}$ $2.00^{+0.23}_{-0.25}$	–
		Normalization	$2 . 4_{- 1.7}^{+ 4.4} \times 10^{- 4}$ $2.4^{+4.4}_{-1.7} \times 10^{-4}$	photon keV⁻¹ cm⁻² s⁻¹

eRASS4	TBPCF	N_H	$3 . 1_{- 3.0}^{+ 14.6} \times 10^{21}$ $3.1^{+14.6}_{-3.0} \times 10^{21}$	cm⁻²
		Covering fraction	0.8	–
	POWERLAW	Photon index	$2 . 03_{- 0.24}^{+ 0.24}$ $2.03^{+0.24}_{-0.24}$	–
		Normalization	$3 . 4_{- 1.3}^{+ 3.4} \times 10^{- 4}$ $3.4^{+3.4}_{-1.3} \times 10^{-4}$	photon keV⁻¹ cm⁻² s⁻¹

Notes. The empty column density entries reflect the fact that the fit could not constrain the parameter.

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