The Close AGN Reference Survey (CARS) - Long-term spectral variability study of the changing-look AGN Mrk 1018

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Table 3.

Summary of the ultraviolet (UVM2 band) flux density, total 2–10 keV X-ray flux, hot-corona photon index (Γ, from model M3), and Fe Kα emission line properties (Sect. 3.4).

Time	Inst.	UV	X-ray continuum		log λ_Edd ^c	Fe Kα properties

		F_UVM2 ^a	Γ	F(2–10 keV)^b		Flux^d	Eq-Width	σ_{Fe Kα}
(yyyy-mm-dd)							(keV)	(eV)
bright type 1 phase

2005-01-15	XMM1	1.45±0.01	$1 . 80_{- 0.08}^{+ 0.11}$ $1.80^{+0.11}_{-0.08}$	9.3±0.6	−1.17±0.06	<2.50	<0.180	50
2005-08-05	Sw1	1.72±0.05	1.89±0.07	14.1±0.8	−0.98±0.04	–	–	–
2008-06-11	Sw2	1.39±0.03	1.76±0.09	12.7±2.0	−0.98±0.05	–	–	–
2008-08-07	XMM2	1.56±0.01	1.97±0.03	11.8±0.2	−1.06±0.01	$1 . 38_{- 0.74}^{+ 1.20}$ $1.38^{+1.20 }_{-0.74 }$	0.07±0.05	$135_{- 110}^{+ 360}$ $135^{+360}_{-110}$
2009-07-03	Suz	–	1.86±0.02	10.6±0.2	−1.11±0.01	$1 . 07_{- 0.5}^{+ 0.64}$ $1.07^{+0.64 }_{-0.5 }$	$0 . 11_{- 0.05}^{+ 0.03}$ $0.11^{+0.03}_{-0.05}$	$195_{- 101}^{+ 145}$ $195^{+145}_{-101}$
2010-11-27	C1	–	$1 . 68_{- 0.13}^{+ 0.12}$ $1.68^{+0.12}_{-0.13}$	$12 . 4_{- 2.3}^{+ 1.8}$ $12.4^{+1.8}_{-2.3}$	−0.96±0.12	–	–	–

transition phase

2013-03-01	Sw3	0.19±0.01	–	2.8±0.7	−1.72±0.12	–	–	–
2013-06-07	Sw4	0.22±0.01	–	8.0±1.3	−1.24±0.08	–	–	–
2014-06-09	Sw5	0.07±0.01	–	2.1±0.6	−1.85±0.13	–	–	–

faint type 1.9 phase

2016-02-25	C2	–	1.64±0.06	1.20±0.09	−2.05±0.03	$0 . 51_{- 0.31}^{+ 0.50}$ $0.51 ^{+0.50 }_{-0.31 }$	$0 . 53_{- 0.15}^{+ 0.16}$ $0.53^{+0.16}_{-0.15}$	$140_{- 87}^{+ 173}$ $140^{+173}_{-87}$
2017-02-17	C3	–	$1 . 61_{- 0.04}^{+ 0.03}$ $1.61^{+0.03}_{-0.04}$	2.3±0.1	−1.78±0.03	$0 . 43_{- 0.31}^{+ 0.63}$ $0.43 ^{+0.63 }_{-0.31 }$	0.09±0.08	$100_{- 70}^{+ 110}$ $100^{+110}_{-70}$
2018-06-12	C4	–	1.63±0.08	1.7±0.1	−1.93±0.02	$0 . 29_{- 0.23}^{+ 0.31}$ $0.29 ^{+0.31 }_{-0.23 }$	0.19±0.11	50
2018-07-23	XMM3	0.06±0.01	$1 . 68_{- 0.03}^{+ 0.01}$ $1.68^{+0.01}_{-0.03}$	2.1±0.04	−1.84±0.01	$0 . 3_{- 0.08}^{+ 0.10}$ $0.3 ^{+0.10 }_{-0.08 }$	0.17±0.06	$72_{- 60}^{+ 65}$ $72^{+65}_{-60}$
2018-09-09	C5	–	$1 . 56_{- 0.05}^{+ 0.07}$ $1.56^{+0.07}_{-0.05}$	2.7±0.13	−1.73±0.02	$0 . 38_{- 0.28}^{+ 0.35}$ $0.38 ^{+0.35 }_{-0.28 }$	$0 . 165_{- 0.163}^{+ 0.193}$ $0.165^{+0.193}_{-0.163}$	50
2019-01-04	XMM4	0.04±0.01	$1 . 82_{- 0.04}^{+ 0.02}$ $1.82^{+0.02}_{-0.04}$	0.84±0.03	−2.17±0.01	$0 . 27_{- 0.09}^{+ 0.08}$ $0.27^{+0.08 }_{-0.09}$	0.27±0.10	<80
2019-02-(06 + 07)	C6 + C7	–	1.69±0.06	1.6±0.1	−1.93±0.02	$0 . 25_{- 0.22}^{+ 0.31}$ $0.25 ^{+0.31 }_{-0.22 }$	$0 . 168_{- 0.154}^{+ 0.159}$ $0.168^{+0.159}_{-0.154}$	50
2019-10-10	C8	–	1.78±0.08	0.86±0.07	−2.22±0.03	<0.37	<0.41	50
2021-02-04	XMM5	0.06±0.01	1.84±0.02	0.80±0.02	−2.18±0.01	$0 . 43_{- 0.12}^{+ 0.12}$ $0.43 ^{+ 0.12 }_{- 0.12 }$	0.37±0.11	$110_{- 42}^{+ 48}$ $110^{+48}_{-42}$

Notes. All XMM-Newton estimates are based on joint fitting of the pn0, pn14, MOS1, and MOS2 datasets. The Suzaku estimate is based the joint XIS0, XIS1, and XIS3 datasets.

^(a)

Flux density in units of 10⁻¹⁴ erg cm⁻² s⁻¹ Å⁻¹, host galaxy subtracted.

^(b)

Flux in units of 10⁻¹² erg cm⁻² s⁻¹.

^(c)

λ_Edd calculated using bolometric correction from Duras et al. (2020).

^(d)

Integrated line flux in units of 10⁻¹³ erg cm⁻² s⁻¹.

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