A possible two-fold scenario for the disc-corona of the luminous active galactic nucleus 1H 0419-577: A high-density disc or a warm corona

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Volume 700 (August 2025)

A&A, 700 (2025) A81

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Table B.1.

Fit of the two 2018 simultaneous 0.3–79 keV XMM-Newton and NuSTAR observations of 1H 0419-577 using COMPTT (warm corona) and REFLKERRD (hot corona and relativistic reflection) models (see Sect. 3.4 for details).

Parameters	2018 May	2018 Nov.
COMPTT (warm corona)

kT_warm (keV)	0.30 $_{- 0.04}^{+ 0.06}$ $^{+0.06}_{-0.04}$	0.27 $_{- 0.04}^{+ 0.05}$ $^{+0.05}_{-0.04}$
τ_warm	12.9 $_{- 1.5}^{+ 1.3}$ $^{+1.3}_{-1.5}$	13.8 $_{- 1.6}^{+ 2.1}$ $^{+2.1}_{-1.6}$
norm_comptt	2.0 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	2.5 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$

REFLKERRD (hot corona plus relativistic reflection)

kT_hot (keV)	29±7	32 $_{- 6}^{+ 7}$ $^{+7}_{-6}$
τ_hot	2.27 $_{- 0.35}^{+ 0.28}$ $^{+0.28}_{-0.35}$	2.12 $_{- 0.47}^{+ 0.29}$ $^{+0.29}_{-0.47}$
θ (deg)	≤14.2
a	≤0.83
q	4.6 $_{- 0.4}^{+ 0.6}$ $^{+0.6}_{-0.4}$	5.5 $_{- 0.5}^{+ 0.9}$ $^{+0.9}_{-0.5}$
log ξ ^(a)	3.1±0.1	3.0±0.1
ℛ	0.66 $_{- 0.16}^{+ 0.24}$ $^{+0.24}_{-0.16}$	0.61 $_{- 0.12}^{+ 0.09}$ $^{+0.09}_{-0.12}$
A_Fe	≤0.56
norm_reflkerrd (×10⁻³)	2.0 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$	2.5 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$

χ²/d.o.f.	1521.8/1433
$χ_{red}^{2}$ $\chi^{2}_{\mathrm{red}}$	1.06

Notes. ^(a The ionisation parameter ξ is expressed in units of erg cm s⁻¹. ^(a).

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