Table 4
Best-fit parameters of the Suzaku spectra of Swift J1644+57 in the 0.45−10 keV range using the following four models: phabs*zphabs*powerlw, phabs*zphabs*zbbody, phabs*zphabs(zbbody+zpowerlw) and phabs*zphabs*bmc.
| Parameter | 906001010 | 707018010 | |
|
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| Model | |||
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| phabs | N H,Gal | 0.02f | 0.02f |
| zphabs | N H,z = 0.354 | 0.9 ± 0.1 | 0.8 ± 0.1 |
| zpowerlw | Γzpow | 1.93 ± 0.01 | 1.3 ± 0.1 |
| N zpow †† | 33.2 ± 0.5 | 0.11 ± 0.03 | |
|
|
|||
| χ2 (d.o.f.) | 2.12 (1568) | 1.25 (177) | |
|
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| phabs | N H,Gal | 0.02f | 0.02f |
| zphabs | N H,z = 0.354 | 0.21 ± 0.04 | 0.2 ± 0.1 |
| zbbody | kTzbb (keV) | 1.27 ± 0.01 | 1.9 ± 0.1 |
| N zbb †† | 1.07 ± 0.02 | 0.009 ± 0.003 | |
|
|
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| χ2 (d.o.f.) | 5.07 (1568) | 1.54 (177) | |
|
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| phabs | N H,Gal | 0.02f | 0.02f |
| zphabs | N H,z = 0.354 | 1.24 ± 0.03 | 1.9 ± 0.4 |
| zbbody | kTzbb (keV) | 0.29 ± 0.02 | 0.24 ± 0.03 |
| N zbb †† | 0.16 ± 0.09 | 0.03 ± 0.01 | |
| zpowerlw | Γpow | 1.92 ± 0.02 | 1.3 ± 0.1 |
| N pow †† | 32.5 ± 0.8 | 0.01 ± 0.07 | |
|
|
|||
| χ2 (d.o.f.) | 1.03 (1566) | 1.17 (175) | |
|
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| phabs | N H,Gal | 0.02f | 0.02f |
| zphabs | N H,z = 0.354 | 1.56 ± 0.01 | 1.5 ± 0.2 |
| bmcz | ΓBMC | 1.76 ± 0.01 | 1.2 ± 0.1 |
| kTs (eV) | 189 ± 3 | 270 ± 7 | |
| logA | –0.7 ± 0.2 | –0.3 ± 0.2 | |
| N bmc †† | 0.47 ± 0.07 | 0.0002 ± 0.0001 | |
|
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| χ2 (d.o.f.) | 0.98 (1566) | 0.97 (175) | |
Notes. Errors are given at the 90% confidence level. The normalization parameters of blackbody and BMC components are in units of 
erg s-1 kpc-2, where 
is the soft photon luminosity in units of 1036 erg s-1, d10 is the distance to the source in units of 10 kpc, and power-law component is in units of 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 talen into ccount [E → E(1 + z)]. Redshift z was fixed to 0.354 (Levan et al. 2011). NH,Gal and NH,z = 0.354 are in units of 1022 cm-2.
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