Table 6
Best-fit parameters of the Swift spectra of Swift J2058+05 in the 0.3−10 keV range using the following four models: phabs*zphabs*powerlw,phabs*zphabs*zbbody, phabs*zphabs(zbbody+zpowerlw) and phabs*zphabs*bmc.
Parameter | 00032004001 | 00032026004 | |
|
|||
Model | |||
|
|||
phabs | N H,Gal | 0.65f | 0.65f |
zphabs | N H,z = 1.185 | 3.7 ± 0.8 | 3.0 ± 0.1 |
zpowerlw | Γzpow | 1.69 ± 0.08 | 1.3 ± 0.1 |
N zpow †† | 35.1 ± 0.9 | 0.41 ± 0.06 | |
|
|||
χ2 (d.o.f.) | 3.2 (967) | 1.27 (967) | |
|
|||
phabs | N H,Gal | 0.65f | 0.65f |
zphabs | N H,z = 1.185 | 0.2 ± 0.3 | 0.6 ± 0.1 |
zbbody | kTzbb (keV) | 3.89 ± 0.08 | 1.6 ± 0.1 |
N zbb †† | 3.7 ± 0.1 | 0.007 ± 0.001 | |
|
|||
χ2 (d.o.f.) | 5.07 (967) | 1.54 (967) | |
|
|||
phabs | N H,Gal | 0.65f | 0.65f |
zphabs | N H,z = 1.185 | 1.9 ± 0.2 | 2.3 ± 0.5 |
zbbody | kTzbb (keV) | 5.7 ± 0.6 | 1.2 ± 0.3 |
N zbb †† | 13.6 ± 0.2 | 0.3 ± 0.1 | |
zpowerlw | Γpow | 1.92 ± 0.02 | 1.3 ± 0.1 |
N pow †† | 210 ± 10 | 15 ± 9 | |
|
|||
χ2 (d.o.f.) | 1.03 (969) | 1.17 (969) | |
|
|||
phabs | NH,Gal | 0.65f | 0.65f |
zphabs | NH,z = 1.185 | 2.6 ± 0.1 | 2.5 ± 0.2 |
bmcz | ΓBMC | 1.78 ± 0.03 | 1.5 ± 0.2 |
kTs (eV) | 300 ± 10 | 270 ± 7 | |
log A | 0.3 ± 0.1 | 1.25 ± 0.6 | |
Nbmc †† | 3.1 ± 0.1 | 0.09 ± 0.01 | |
|
|||
χ2 (d.o.f.) | 1.04 (969) | 0.89 (969) |
Notes. Errors are given at the 90% confidence level.
The normalization parameters of the blackbody and BMC components are in units of erg s-1 kpc-2, where
is the soft photon luminosity in units of 1035 erg s-1, d10 is the distance to the source in units of 10 kpc, and power-law component is in units of keV-1 cm-2 s-1 at 1 keV. kTBB and kTs are the temperatures of the blackbody and seed photon components (in keV and eV), respectively. Γpow and ΓBMC are the indices of the zpowerlw and bmc, respectively. Hereafter superscript z indicates that the cosmological reddening of the spectrum was taken into account (E → E(1 + z)). Redshift z was fixed to 1.185 (Cenko et al. 2012). NH,Gal and NH,z = 1.185 are in units of 1021 cm-2.
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