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Table 2:

Best-fitting values and associated errors for different modelization used to fit the hard state data of 4U 1705-44.
Parameter Units Values
    Model 1 Model 2 Model 3
$N_{\rm H}$ 1022 cm-2 2.7a 2.7a 2.7a
Disk/BB kT keV 0.30 $\pm$ 0.04 0.43 $\pm$ 0.03 0.23 $\pm$ 0.12
Disk Normalization     70a 1200a
BB radius km 14 $\pm$ 5    
Disk/BB flux 10-10 erg cm-2 s-1 0.16-0.30 0.19-0.48 0.08-0.29
Comptt kT0 keV $\rm0.55_{-0.02}^{+0.01}$ 0.57 $\pm$ 0.03 0.50 $\pm$ 0.01
Comptt $kT_{\rm e}$ keV 14.4 $\pm$ 0.2 $\rm 13.8_{-0.3}^{+0.2}$ $\rm 13.8_{-0.3}^{+0.2}$
Comptt $\tau$   5.5a 5.5a 5.5a
Comptt flux 10-10 erg cm-2 s-1 2.6-6.2 2.5-5.7 2.1-5.2
Iron line keV 6.50 $\pm$ 0.07    
Iron $\sigma $   0.41 $\pm$ 0.08    
Line EW eV 60 $\pm$ 25    
Inner radius $R_{\rm g}$   $\rm 30_{-24}^{+60}$ 30a
Outer radius $R_{\rm g}$   $\rm 700_{-300}^{+5000}$ 1000a
Betor     2.3a 2.3a
Inclination degrees   35a 35a
$kT_{\rm ion}$ keV   1.8 $\pm$ 0.3 1.6 $\pm$ 0.2
log $\xi$     <1.1 <1.04
Refbb Flux 10-10 erg cm-2 s-1   0.08-0.24 0.08-0.29
$\chi^2_{\rm red}$(d.o.f.)   743 (727) 747 (726) 753 (726)

Notes. (a) Frozen parameter during the fitting procedure


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