Disk evolution and black hole mass constraints on EXO 1846−031 based on NICER/XTI, Insight-HXMT and NuSTAR observations

Open Access

Table 2.

Fitting results for X3 with Kerrbb+reflection+gauss model.

Model	relxill+cutpl	relxillNS+cutpl
Parameters
const_LE	$1 . 054_{- 0.024}^{+ 0.029}$ $1.054^{+0.029}_{-0.024}$	$1 . 058_{- 0.028}^{0.032}$ $1.058^{0.032}_{-0.028}$
a	0.998 ^*	0.998 ^*
Incl(°)	< 4.98	< 8.12
M(M_⊙)	$6 . 28_{- 0.09}^{+ 0.07}$ $6.28^{+0.07}_{-0.09}$	$5 . 52_{- 0.60}^{+ 0.43}$ $5.52^{+0.43}_{-0.60}$
Ṁ(× 10⁻²)	$54 . 95_{- 1.47}^{+ 1.71}$ $54.95^{+1.71}_{-1.47}$	$41 . 20_{- 5.17}^{+ 5.42}$ $41.20^{+5.42}_{-5.17}$
T_in (keV)	−	$0 . 747_{- 0.44}^{+ 0.052}$ $0.747^{+0.052}_{-0.44}$
Γ	2.79 ± 0.07	$2 . 00_{- 0.09}^{+ 0.08}$ $2.00^{+0.08}_{-0.09}$
Log(ξ)	< 1.96	$2 . 16_{0.07}^{0.11}$ $2.16^{0.11}_{0.07}$
^§A_Fe	$2 . 35_{- 1.07}^{+ 0.26}$ $2.35^{+0.26}_{-1.07}$	$4 . 84_{- 0.55}^{1.16}$ $4.84^{1.16}_{-0.55}$
^‡E_cut/kT_e (keV)	60.00 ^*	60.00 ^*
^★Log (n)	15 ^*	19 ^*
Norm_r(×10⁻³)	$81 . 01_{- 37.70}^{+ 25.85}$ $81.01^{+25.85}_{-37.70}$	$30 . 73_{- 7.79}^{+ 5.72}$ $30.73^{+5.72}_{-7.79}$
Norm_PL/Norm_CP(×10⁻²)	< 0.82	$6 . 72_{- 1.02}^{+ 1.26}$ $6.72^{+1.26}_{-1.02}$
E_gau(keV)	$6 . 75_{- 0.04}^{+ 0.03}$ $6.75^{+0.03}_{-0.04}$	6.79 ± 0.04
σ_gau(keV)	$0 . 11_{- 0.07}^{+ 0.05}$ $0.11^{+0.05}_{-0.07}$	$0 . 14_{- 0.07}^{+ 0.05}$ $0.14^{+0.05}_{-0.07}$
Norm_gau(10⁻³)	$1 . 09_{- 0.21}^{+ 0.22}$ $1.09^{+0.22}_{-0.21}$	$1 . 20_{- 0.25}^{+ 0.31}$ $1.20^{+0.31}_{-0.25}$
χ²/ν	1134.74/1000	1104.78/999

	(1.13)	(1.10)
AIC	1159.052	1131.145

Notes.

A parameter fixed in the fit.

^‡

E_cut corresponds to the relxill and cutoff power-law, while kT_e corresponds to the relxillNS and NthComp.

^§

iron abundance in solar units.

^(★)

logarithmic value of the disk density (in cm⁻³).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.