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Table 5

RGS best-fit parameters to the two flux-resolved spectra.

Component Parameter Low-flux dip spectrum High-flux non-dip spectrum
Blackbody Area (1018 cm2) 4.5 ± 0.4 4.9 ± 0.2
Radius (km) 10 800 ± 1700 11 200 ± 1360
kT (eV/105 K) 62 ± 1/7.2 ± 0.1 90 ± 1/10.4 ± 0.1
LX (1036 erg s−1) 19 ± 6 178 ± 16
Lbol (1036 erg s−1) 74 320

CIE 1 ne nHV (1058 cm−3) 1.12 ± 0.05 All fixed
kT (eV/105 K) 1320 ± 50/153 ± 6
LX (1036 erg s−1) 0.496 ± 0.023
Lbol (1036 erg s−1) 0.68
σV (km s−1) 890 ± 90
N/H 11 ± 3

CIE 2 ne nHV (1058 cm−3) 3.7 ± 0.9 All fixed
kT (eV/105 K) 180 ± 50/20.9 ± 6
LX (1036 erg s−1) 2.33 ± 0.58
Lbol (1036 erg s−1) 6.2
σV (km s−1) 890 (coupled)
N/H 11 (coupled)

PION NH (1021 cm−2) ≲ 0.6 18 ± 3
Log ξ (erg s−1 cm) ≡ 2.29 2.29 ± 0.05
σV (km s−1) ≡ 350 350 ± 5
ΔV (km s−1) ≡−900 − 900 ± 10
N/H ≡ 60 60 ± 20
O/N ≡ 0.7 0.7 ± 0.1
C/N ≡ 0.11 0.11 ± 0.01

Cold gas NH (1021 cm−2) 4.2 ± 0.1 4.3 ± 0.1
O/H ≡ 1 1.1 ± 0.1

Dust O I (1017 cm−2) ≲ 5 8.1 ± 0.4

Statistics χ2/d.o.f. 2603/1685 = 1.5 10 070/1716 = 5.9

Notes. Uncertainties are given at a 1σ (68.3%) level. The CIE parameters are only fitted for the emission-line-dominated, low-flux dip spectrum. The X-ray luminosities (LX) are computed between 0.3 and 10 keV (assuming a distance of 9 kpc, Lbol from 0.01–100 keV (Lbol are extrapolated and, therefore, provided without error bars). σV and ΔV refer to the velocity dispersion and the line-of-sight velocity (Doppler shift), respectively. PION photoionised absorption and dust (AMOL) absorption model parameters are also reported for the low-flux spectrum for completeness, but the low continuum prevents us from obtaining a significant detection.

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