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Table 3

Best fit parameters for the NuSTAR observations.

Source k T hot K hot a Γ K po b L / L edd c red. χ2/d.o.f. p k T hot red. χ2/d.o.f.
keV [10-3] [10-3] diskbb+po keV diskpbb
Ho II X-1 2.11 5.09 2.41 0.98 52.1 0.98/227 <0.507 3.31 1.01/228
Ho IX X-1 3.19 2.74 2.38 2.12 86.9 1.01/440 0.542± 0.009 4.33 1.02/441
IC 342 X-1 2.37 9.81 2.58 3.58 39.1 1.00/296 <0.508 3.41 1.04/297
NGC 1313 X-1 2.64 2.41 2.80 1.58 36.0 1.02/122 <0.505 3.52 1.08/123
NGC 1313 X-2 1.94 1.46 4.26 1.18 14.7 0.98/61 <0.522 1.77 0.98/62
NGC 5907 ULX 2.51 2.41 1.68 0.05 457 1.02/107 0.579 3.39 1.25/108

Notes. All errors are in the 1σ confidence range.

(a)

Where Khot is the normalisation parameter for the diskbb component. Namely Khot = (Rhot/D10 kpc)2 cosi, where Rhot is the inner radius of the disk in km, D10 kpc is the distance in units of 10 kpc and “i” is the inclination.

(b)

Power-law component normalisation constant: photons/keV/cm2/s at 1 keV.

(c)

Luminosity in the 3–78 keV range, extrapolated from the best-fit model. Ledd is the Eddington luminosity for an isotropically accreting NS with a mass of 1.4 M⊙.

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