A self-consistent approach to the hard and soft states of 4U 1705-44

A. D'Aì; T. Di Salvo; D. Ballantyne; R. Iaria; N. R. Robba; A. Papitto; A. Riggio; L. Burderi; S. Piraino; A. Santangelo; G. Matt; M. Dovčiak; V. Karas

doi:10.1051/0004-6361/200913758

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Volume 516 (June-July 2010)

A&A, 516 (2010) A36

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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	2.7^a	2.7^a	2.7^a
Disk/BB kT	keV	0.30 $\pm$ 0.04	0.43 $\pm$ 0.03	0.23 $\pm$ 0.12
Disk Normalization			70^a	1200^a
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 $\tau$		5.5^a	5.5^a	5.5^a
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	$R_{\rm g}$		$\rm 30_{-24}^{+60}$	30^a
Outer radius	$R_{\rm g}$		$\rm 700_{-300}^{+5000}$	1000^a
Betor			2.3^a	2.3^a
Inclination	degrees		35^a	35^a
$kT_{\rm ion}$	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

Source LaTeX | All tables | In the text

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