The neutron star binary SAX J1747.0-2853 , located in the Galactic Center region at about 0.5 deg from Sgr A* and at a distance of \sim 9 kpc , has been observed in outburst four times ( 1998 , 1999 , 2000 and 2001 ) by BeppoSAX and RossiXTE .
At the time of its discovery in 1998 the source was observed in a low/hard state , showing a hard tail with a high energy cutoff of \sim 70 keV .
About two years later the source reappeared about one order of magnitude brighter in the X-rays ( 0.5-10 keV ) and with a significantly steeper spectrum .
As was the case for the low state , the data could be fitted by an input model based on two continuum primary components : a ) a soft thermal excess , which is \sim 4 times more luminous than the one found in hard state ; b ) a non-thermal component which is compatible with either a power-law or a comptonization spectrum .
The soft component is equally well described by pure blackbody or multi-color disk emission , with significantly higher temperature than observed in low state ( \sim 1.3 vs. the \sim 0.5 keV assuming pure blackbody ) .
For this model , the flux of the non-thermal component below \sim 10 keV is a significant fraction of the total X-ray flux , i.e .
greater than \sim 50 % in the 2-10 keV band .