Table 2: Spectral parameters of acceptable model fits to the NFI spectrum. $\Gamma$ is the photon index. Errors are for 90% confidence.
Model power law + black body

$N_{\rm H}$ $(3.1\pm0.3)\times10^{21}$

bb kT $0.51\pm0.03$ keV

$\Gamma$ $2.07\pm0.05$

$\chi ^2_\nu$ 1.21 (133 dof)

Unabs. 0.1-200 keV flux $(6.4\pm0.5)\times10^{-10}$ erg cm^-2 s^-1

Abs. 2-10 keV flux $(1.37\pm0.02)\times10^{-10}$ erg cm^-2 s^-1

Model comptt + black body

$N_{\rm H}$ $(2.8\pm0.3)\times10^{21}$

bb kT $0.51\pm0.03$ keV

$kT_{\rm plasma}$ 34_-17⁺¹¹⁰ keV

$\tau$ (spherical geometry) $1\pm0.5$

$\chi^2_{\rm r}$ 1.20 (131 dof)

Unabs. 0.1-200 keV flux $(5.5\pm0.5)\times10^{-10}$ erg cm^-2 s^-1

Abs. 2-10 keV flux $(1.37\pm0.02)\times10^{-10}$ erg cm^-2 s^-1

**Table 2:** Spectral parameters of acceptable model fits to the NFI spectrum. $\Gamma$ is the photon index. Errors are for 90% confidence.
Model	power law + black body
$N_{\rm H}$	$(3.1\pm0.3)\times10^{21}$
bb kT	$0.51\pm0.03$ keV
$\Gamma$	$2.07\pm0.05$
$\chi ^2_\nu$	1.21 (133 dof)
Unabs. 0.1-200 keV flux	$(6.4\pm0.5)\times10^{-10}$ erg cm^-2 s^-1
Abs. 2-10 keV flux	$(1.37\pm0.02)\times10^{-10}$ erg cm^-2 s^-1
Model	comptt + black body
$N_{\rm H}$	$(2.8\pm0.3)\times10^{21}$
bb kT	$0.51\pm0.03$ keV
$kT_{\rm plasma}$	34_-17⁺¹¹⁰ keV
$\tau$ (spherical geometry)	$1\pm0.5$
$\chi^2_{\rm r}$	1.20 (131 dof)
Unabs. 0.1-200 keV flux	$(5.5\pm0.5)\times10^{-10}$ erg cm^-2 s^-1
Abs. 2-10 keV flux	$(1.37\pm0.02)\times10^{-10}$ erg cm^-2 s^-1

Source LaTeX | All tables | In the text

	1 Introduction
	2 Synopsis of X-ray bursts from 2S 0918-549
	3 Analysis of the long burst
	4 Flux history of persistent emission
	5 Discussion
	6 Conclusion
	References