EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 564 (April 2014) A&A, 564 (2014) A37 Full HTML
Free Access

Table 2

Best fit of the XIS data between 3 and 10 keV with a simple power law, a power-law + gaussian line and a power-law + Laor profile emission line.

Power law
Obs. Γ F3−10 keV L3 − 10 keV/LEdd χ2/d.o.f.
(×10-10 erg cm-2 s-1) (%)
1 1.72 ± 0.01 3.35 0.188 429/254
2 1.56 ± 0.01 2.05 0.115 303/254
3 1.53 ± 0.02 0.89 0.050 297/251
4 1.53 ± 0.02 0.66 0.037 314/245
5 1.57 ± 0.02 0.47 0.026 220/219
2008 1.52 ± 0.01 0.44 0.024 435/254
Power law+Gauss
Obs. Γ E gauss σ gauss F gauss EW χ2/d.o.f.
(keV) (keV) (×10-4ph cm-2 s-1) (eV)
1 1.81 ± 0.02 6.40 ± 0.10 0.66 ± 0.13 6.5 150 285/251
2 1.60 ± 0.02 6.49 ± 0.12 0.35 ± 0.13 1.5 55 267/251
3 1.57 ± 0.02 6.77 ± 0.13 0.36 ± 0.11 1.0 90 263/248
4 1.56 ± 0.03 6.42 ± 0.20 0.36 ± 0.22 0.5 60 300/242
5 1.62 ± 0.06 6.59 ± 0.30 0.60 ± 0.51 0.7 130 207/216
2008 1.54 ± 0.01 6.41 ± 0.02 0.10 ± 0.03 0.4 65 248/251
Power law+Laor
Obs. Γ E laor R in F laor EW χ2/d.o.f.
(keV) (Rg) (×10-4ph cm-2 s-1) (eV)
1 1.80 7.00 5.0 6.0 160 286/250
2 1.60 6.84 6.3 1.9 80 266/250
3 1.58 7.06 <35 1.3 140 260/247
4 1.56 6.82 <180 0.7 90 300/241
5 1.61 7.03 <25 0.7 120 207/215
2008 1.54 6.43 >100 0.38 65 248/251

Notes. In the last case, the five XIS spectra have been fitted simultaneously, letting all the parameters free to vary but imposing the Laor profile inclination angle to be the same between the five models. The best-fit value for the inclination angle is deg. The errors on the inner disk radius Rin of the Laor profile correspond to a confidence level of 90% for two parameters. We have also reported the best fit parameter values for the 2008 Suzaku observation, again assuming the same inclination angle as the five other Suzaku observations. With the addition of these data, the best-fit value for the inclination angle then becomes deg. To compute the 3−10 keV flux in Eddington units, we adopt an Eddington luminosity of LEdd ≃ 1.3  ×  1039 erg s-1 (i.e. we assume a ten-solar-mass black hole) and a distance to GX 339-4 of 8 kpc.

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.