An X-ray study of changing-look active galactic nuclei

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Table 2.

Best-fit parameters for the spectral analysis of ASCA, Suzaku (shaded in gray), BeppoSAX (shaded in blue), NuSTAR (shaded in red), RXTE (shaded in green), and XMM-Newton (shaded in yellow) AGN observations.

Obs. ID	MJD	α=	T_s	log(A)	N $_{com}^{(† †)}$ $_{com}^{(\dagger\dagger)}$	E_line	$N_{line}^{(† † †)}$ $N_{line}^{(\dagger\dagger\dagger)}$	χ_red²
	(day)	Γ − 1 ^( † )	(keV)			(keV)		(d.o.f.)
			1H 0707–495
73043000	49792.0	1.03±0.09	0.107±0.004	-1.14±0.07	2.31±0.9	0.83±0.09	11.02±0.04	1.01(86)
76031000	50949.8	0.43±0.10	0.111±0.005	-1.30±0.09	0.75±0.3	0.84±0.05	2.12±0.06	1.19(80)
87043000	51250.0	1.20±0.10	0.065±0.004	-1.06±0.03	8.39±0.6	0.82±0.08	5.37±0.02	1.04(69)
700008010	53707.355	0.79±0.13	0.121±0.004	-1.14±0.05	7.6±0.2	0.83±0.02	1.04±0.02	1.00(802)

			NGC 1566
707002010	56066.3	0.77±0.04	0.13±0.01	0.42±0.04	0.22±0.03	6.36±0.04	0.096±0.003	0.95(563)
80301601002	58295.8	1.01±0.03	0.14±0.02	0.12±0.02	1.07±0.04	6.36±0.05	0.098±0.007	0.99(963)
0800840201	58296.0	1.05±0.04	0.13±0.01	0.11±0.05	1.11±0.05	6.37±0.06	0.095±0.009	0.99(430)
80401601002	58395.5	0.95±0.06	0.14±0.03	0.18±0.09	0.26±0.07	6.5±0.1	0.08±0.01	1.04(968)
0820530401	58395.5	0.92±0.04	0.13±0.01	0.18±0.05	0.26±0.05	6.37±0.06	0.095±0.009	0.99(430)
80502606002	58639.3	1.15±0.06	0.14±0.03	0.42±0.09	0.34±0.07	6.5±0.1	0.08±0.01	1.04(968)
0840800401	58639.3	1.12±0.05	0.15±0.02	0.20±0.04	0.57±0.06	6.4±0.07	0.09±0.02	1.02(435)
60501031002	58703.4	0.89±0.05	0.14±0.03	0.61±0.05	0.37±0.05	6.46±0.03	0.096±0.003	0.89(831)
0851980101	58706.6	0.85±0.06	0.13±0.02	0.64±0.04	0.29±0.04	6.42±0.09	0.096±0.003	0.97(210)
60501031004	58713.2	0.75±0.09	0.13±0.01	0.62±0.03	0.35±0.03	6.43±0.05	0.096±0.003	0.93(723)
60501031006	58716.4	0.65±0.07	0.14±0.03	0.72±0.05	0.21±0.06	6.40±0.06	0.096±0.003	0.87(722)

			NGC 7679
66019000	50995.6	0.62±0.02	0.15±0.07	2.00^{† † ††}	0.30±0.01	6.5±0.1	0.21±0.01	1.09(145)
66019010	51432.9	0.55±0.04	0.13±0.04	0.08±0.01	0.37±0.02	6.41±0.09	0.41±0.02	0.97(66)
40631001	51153.6	0.60±0.02	0.35±0.06	0.26±0.03	0.71±0.03	6.4±0.5	0.075±0.02	1.04(82)

			Mrk 3
70002000	49098.2	0.10±0.02	0.18±0.01	-1.43±0.02	0.001±0.001	6.41±0.09	0.54±0.06	1.05(52)
74041000	50382.5	0.10±0.02	0.21±0.01	-1.59±0.03	0.002±0.001	6.39±0.07	0.63±0.02	1.09(41)
20330010100	50442.6	0.21±0.02	0.28±0.01	-3.47±0.04	0.46±0.89	6.41±0.08	1.99±0.09	0.83(47)
20330010200	50552.3	0.54±0.02	0.29±0.02	-3.40±0.05	1.21±0.18	6.42±0.05	1.9±0.2	0.92(47)
20330010300	50553.2	0.31±0.02	0.28±0.02	-3.25±0.06	0.63±0.09	6.41±0.06	2.4±0.6	0.93(47)
20330010400	50554.0	0.82±0.03	0.31±0.05	-2.91±0.09	0.54±0.06	6.41±0.07	2.8±0.3	1.04(47)
20330010500	50555.3	0.17±0.02	0.28±0.02	-3.06±0.08	0.44±0.07	6.35±0.09	1.73±0.09	0.89(47)
20330010600	50542.0	1.02±0.03	0.23±0.02	-2.82±0.08	0.59±0.07	6.37±0.08	3.83±0.08	1.10(47)
20330010700	50538.2	0.87±0.02	0.31±0.03	-3.15±0.07	1.05±0.19	6.42±0.04	3.93±0.09	0.96(47)
20330010800	50528.3	0.21±0.02	0.29±0.03	-3.28±0.09	0.67±0.17	6.39±0.05	2.99±0.08	0.94(47)
20330010900	50523.5	0.11±0.01	0.30±0.02	-2.79±0.11	0.55±0.07	6.38±0.08	2.20±0.09	0.86(47)
20330011000	50496.2	0.95±0.02	0.28±0.01	-2.56±0.11	0.20±0.07	6.39±0.09	4.33±0.08	0.94(47)
20330011100	50598.8	0.50±0.02	0.24±0.01	-2.33±0.11	0.03±0.07	6.40±0.06	1.84±0.05	0.89(47)
20330011200	50636.0	0.51±0.01	0.31±0.03	-3.19±0.16	0.30±0.04	6.40±0.07	2.55±0.09	0.98(47)
50132002	50554.6	0.55±0.04	0.23±0.03	-2.83±0.16	0.04±0.01	6.40±0.08	0.68±0.04	0.90(84)
100040010	53665.1	0.10±0.02	0.10±0.01	-0.47±0.02	0.0001±0.0001	6.41±0.05	0.54±0.06	0.94(629)
709022010	56931.9	0.11±0.01	0.10± 0.01	-0.90±0.02	0.0011±0.0001	6.41±0.02	1.03±0.01	0.98(238)
709022020	56937.8	0.09±0.02	0.13± 0.01	0.27±0.02	0.00015±0.0001	6.50±0.08	5.06±0.01	1.05(258)
709022030	56953.2	0.10±0.02	0.14± 0.01	0.53±0.02	0.00014±0.0001	6.57±0.09	5.31±0.01	1.02(300)
709022040	57104.2	0.11±0.03	0.16±0.01	0.02±0.01	0.00003±0.0001	6.48±0.07	3.62±0.01	1.54(293)
709022050	57116.4	0.10±0.01	0.15±0.02	-0.03±0.01	0.00003±0.0001	6.49±0.04	3.15±0.01	1.47(154)

Notes. Parameter errors correspond to a 1σ confidence level. ^( † )The spectral model is tbabs*(BMC + Gaussian/Laor). ^{( † †)}Normalization parameters of BMC component is in units of $L_{35}^{soft} / d_{10}^{2}$ $L_{35}^{\mathrm{soft}}/d^2_{10}$ erg/s/kpc², where $L_{35}^{soft}$ $L_{35}^{\mathrm{soft}}$ is the soft photon luminosity in units of 10³⁵; d ₁₀ is the distance to the source in units of 10 kpc. ^{( † † † )} Gaussian/Laor component is in units of 10⁻⁴× total photons cm⁻²s⁻¹. ^{( † † † †)}When parameter log(A) ≫ 1, it is fixed to a value 2.0 (see comments in the text). N_H was fixed at the value 2.5 × 10²⁰ cm⁻³ (for NGC 1566), 3 × 10²¹ cm⁻³ (for 1H 0707) and 4 × 10²¹ cm⁻³ (for NGC 7679). For 1H 0707 we present the strongest Laor-line component among all line features in the source spectrum, although we used the full composition of N XVII, O III, Fe XVII, Ne X, S XVI, Fe I–XXII and Fe XXV/Fe XXVI K_α lines with energies of 0.5, 0.65, 0.85, 1.02, 2.9, 6.4, and 6.8 keV, respectively.

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