The very faint X-ray transient Swift J174610–290018 at the Galactic center

Open Access

Table 4

Best-fit parameters and associated uncertainties (1σ) for the five XMM-Newton spectra extracted during the 2024 outburst.

	Parameter	2024-03-26	2024-03-27	2024-03-28	2024-03-29	2024-04-04
	N_H [×10²² cm⁻²]	19 ± 2	18 ± 2	17 ± 4	19 ± 1	14 ± 2
	Γ	2.1 ± 0.2	2.2 ± 0.2	2.2 ± 0.2	${1.9}_{- 0.1}^{+ 0.2}$ $\[1.9_{-0.1}^{+0.2}\]$	1.7 ± 0.2
	log norm. [ph/keV/cm²/s]	−2.4 ± 0.2	−2.6 ± 0.1	−2.7 ± 0.3	−2.7 ± 0.1	−3.5 ± 0.2

model 1	log F_6.7 [ph/cm²/s]	$- {5.1}_{- 0.4}^{+ 0.2}$ $\[-5.1_{-0.4}^{+0.2}\]$	$- {5.3}_{- 0.3}^{+ 0.2}$ $\[-5.3_{-0.3}^{+0.2}\]$	<−4.9*	<−5.3*	−5.4 ± 0.1
model 1	log F_6.97 flux [ph/cm²/s]	−4.9 ± 0.2	−4.9 ± 0.2	$- {5.0}_{- 0.3}^{+ 0.2}$ $\[-5.0_{-0.3}^{+0.2}\]$	−5.0 ± 0..1	−5.5 ± 0.2

model 2	E [keV]	6.84 ± 0.09	6.89 ± 0.03	${6.82}_{- 0.08}^{+ 0.06}$ $\[6.82_{-0.08}^{+0.06}\]$	6.95 ± 0.06	${6.82}_{- 0.05}^{+ 0.06}$ $\[6.82_{-0.05}^{+0.06}\]$
	σ [eV]	<300*	<130*	<200*	<220*	<250*
	log F_line [ph/cm²/s]	−4.7 ± 0.2	$- {4.79}_{- 0.09}^{+ 0.08}$ $\[-4.79_{-0.09}^{+0.08}\]$	−4.7 ± 0.2	$- {4.9}_{- 0.2}^{+ 0.1}$ $\[-4.9_{-0.2}^{+0.1}\]$	−5.1 ± 0.1
	Δ AIC_2–1	4.1	1.7	1.3	4.4	3.8

	F_2–10 [×10⁻¹² erg s⁻¹ cm⁻²]	${8.8}_{- 0.9}^{+ 1.1}$ $\[8.8_{-0.9}^{+1.1}\]$	${5.6}_{- 0.4}^{+ 0.5}$ $\[5.6_{-0.4}^{+0.5}\]$	${4.6}_{- 0.7}^{+ 0.9}$ $\[4.6_{-0.7}^{+0.9}\]$	${6.4}_{- 0.4}^{+ 0.5}$ $\[6.4_{-0.4}^{+0.5}\]$	${1.6}_{- 0.1}^{+ 0.2}$ $\[1.6_{-0.1}^{+0.2}\]$

Notes. Model 1 includes the Fe XXV and Fe XXVI lines, while model 2 a single reflection line. F_2–10 is the de-absorbed flux in the 2–10 keV band, assuming model 1. *: upper limit. We report the 84^th percentile of the posterior.

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.