The giant outburst of EXO 2030+375 - II. Broadband spectroscopy and evolution

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Volume 688 (August 2024)

A&A, 688 (2024) A214

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Table 3.

Best-fit parameters for Chandra/HETG spectrum of EXO 2030+375.

Parameter	Value
N_H^(a)	$2 . 26_{- 0.07}^{+ 0.06}$ $2.26^{+0.06}_{-0.07}$
F_PL^(b)	4.49 ± 0.03
Γ	$1 . 05_{- 0.05}^{+ 0.06}$ $1.05^{+0.06}_{-0.05}$
kT_BB^(c)	$0 . 63_{- 0.06}^{+ 0.04}$ $0.63^{+0.04}_{-0.06}$
F_BB^(b)	0.28 ± 0.02
E_{Si XIV Lyα}^(c)	2.41 ^( † )
A_{Si XIV Lyα}^(d)	$0 . 74_{- 0.30}^{+ 0.29}$ $0.74^{+0.29}_{-0.30}$
E_Fe Kα^(c)	6.40 ^(†)
A_Fe Kα^(d)	$0 . 27_{- 0.18}^{+ 0.22}$ $0.27^{+0.22}_{-0.18}$
E_{Fe XXV Heα}^(c)	6.70 ^( † )
A_{Fe XXV Heα}^(d)	$0 . 42_{- 0.24}^{+ 0.25}$ $0.42^{+0.25}_{-0.24}$
E_{Fe XXVI Lyα}^(c)	6.97 ^( † )
A_{Fe XXVI Lyα}^(d)	< 0.38

Notes. All line widths were fixed to 10 eV.

^(a)

In 10²² cm⁻².

^(b)

Unabsorbed 0.1–10 keV flux in 10⁻⁹ erg s⁻¹ cm⁻².

^(c)

In keV.

^(d)

Photon flux in 10⁻³ phs cm⁻² s⁻¹.

^(†)

Kept frozen during the fit.

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