Revealing the burning and soft heart of the bright bare active galactic nucleus ESO 141-G55: X-ray broadband and SED analysis

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Volume 689 (September 2024)

A&A, 689 (2024) A336

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Table 6.

Simultaneous SED fits of the 2022 simultaneous XMM-Newton-pn and NuSTAR spectra of ESO141-G55 with the baseline model RELAGN+REFLKERRD for different fixed black hole spin values.

Parameters	a = 0	a = 0.5	a = 0.7	a = 0.90	a = 0.95	a = 0.998
log ṁ	−0.93 ± 0.1	−0.85 $_{- 0.01}^{+ 0.02}$ $^{+0.02}_{-0.01}$	−0.75 $_{- 0.01}^{+ 0.02}$ $^{+0.02}_{-0.01}$	−0.66 ± 0.01	−0.62 ± 0.01	−0.52 ± 0.01
θ (degrees)	43 $_{- 4}^{+ 5}$ $^{+5}_{-4}$	41 $_{- 1}^{+ 2}$ $^{+2}_{-1}$	41 ± 1	34 ± 1	25 ± 1	≤9.2
kT_hot (keV)	136 (f)	136 (f)	136 (f)	136 (f)	136 (f)	136 (f)
τ_hot	0.47 ± 0.04	0.47 $_{- 0.02}^{+ 0.05}$ $^{+0.05}_{-0.02}$	0.47 ± 0.04	0.53 $_{- 0.08}^{+ 0.06}$ $^{+0.06}_{-0.08}$	0.59 $_{- 0.08}^{+ 0.09}$ $^{+0.09}_{-0.08}$	0.73 $_{- 0.08}^{+ 0.09}$ $^{+0.09}_{-0.08}$
Γ_hot	2.01 $_{- 0.03}^{+ 0.01}$ $^{+0.01}_{-0.03}$	2.02 $_{- 0.03}^{+ 0.02}$ $^{+0.02}_{-0.03}$	2.02 $_{- 0.03}^{+ 0.02}$ $^{+0.02}_{-0.03}$	1.97 ± 0.02	1.96 ± 0.03	2.00 ± 0.02
R_hot (R_g)	17 ± 1	11 ± 1	8.0 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	≤6.2	≤6.1	≤6.0
kT_warm (keV)	0.33 $_{- 0.06}^{+ 0.09}$ $^{+0.09}_{-0.06}$	0.32 $_{- 0.06}^{+ 0.11}$ $^{+0.11}_{-0.06}$	0.33 $_{- 0.06}^{+ 0.07}$ $^{+0.07}_{-0.06}$	0.55 $_{- 0.12}^{+ 0.17}$ $^{+0.17}_{-0.12}$	0.55 $_{- 0.09}^{+ 0.15}$ $^{+0.15}_{-0.09}$	0.44 $_{- 0.04}^{+ 0.07}$ $^{+0.07}_{-0.04}$
Γ_warm	2.88 $_{- 0.07}^{+ 0.06}$ $^{+0.06}_{-0.07}$	2.88 $_{- 0.07}^{+ 0.06}$ $^{+0.06}_{-0.07}$	2.88 $_{- 0.10}^{+ 0.06}$ $^{+0.06}_{-0.10}$	2.93 ± 0.05	2.92 $_{- 0.06}^{+ 0.05}$ $^{+0.05}_{-0.06}$	2.96 $_{- 0.07}^{+ 0.06}$ $^{+0.06}_{-0.07}$
R_warm (R_g)	44 $_{- 4}^{+ 5}$ $^{+5}_{-4}$	20 $_{- 3}^{+ 4}$ $^{+4}_{-3}$	12 $_{- 1}^{+ 3}$ $^{+3}_{-1}$	8.7 ± 0.4	9.0 ± 0.4	9.6 $_{- 0.7}^{+ 0.6}$ $^{+0.6}_{-0.7}$
log ξ	0.6 ± 0.2	0.5 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	0.6 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	1.1 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$	1.4 $_{- 0.2}^{+ 0.3}$ $^{+0.3}_{-0.2}$	1.6 $_{- 0.3}^{+ 0.2}$ $^{+0.2}_{-0.3}$
A_Fe	1.4 $_{- 0.2}^{+ 0.4}$ $^{+0.4}_{-0.2}$	1.4 $_{- 0.1}^{+ 0.4}$ $^{+0.4}_{-0.1}$	1.5 $_{- 0.2}^{+ 0.4}$ $^{+0.4}_{-0.2}$	2.2 $_{- 0.4}^{+ 0.3}$ $^{+0.3}_{-0.4}$	1.9 $_{- 0.3}^{+ 0.5}$ $^{+0.5}_{-0.3}$	0.9 ± 0.1
norm_reflkerrd (×10⁻³)	4.3 $_{- 0.8}^{+ 0.7}$ $^{+0.7}_{-0.8}$	4.4 $_{- 1.1}^{+ 0.7}$ $^{+0.7}_{-1.1}$	4.4 $_{- 0.6}^{+ 0.7}$ $^{+0.7}_{-0.6}$	3.3 ± 0.5	2.6 $_{- 0.5}^{+ 0.6}$ $^{+0.6}_{-0.5}$	2.0 $_{- 0.3}^{+ 0.4}$ $^{+0.4}_{-0.3}$

χ² (d.o.f. = 924)	1149.5	1157.6	1163.8	1187.1	1223.4	1319.1

Notes. ‘(f)’ means that the value has been fixed.

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