Table 4
Results of the spectral modelling for the X-ray high and low modes and the rotation-powered MSP state of J1023 (see the text for details).
| Spectral parameter | High mode | Low mode | Rotation-powered MSP state |
|---|---|---|---|
| (319.2 ks) | (104.6 ks) | (116.8 ks) | |
| Power law ΓD | 1.58 ± 0.01 | 2.02 ± 0.03 | – |
| Power law ND (10−4) | 17.6 ± 0.4 | 2.87 ± 0.06 | – |
| Disc kT (eV) |  |
<46 | – |
| Disc norm. Nd |  |
>8 × 103 | – |
| NS atmos. kT∞ (eV) |  |
 |
tied to Low mode |
| NS atmos. Rem (km) |  |
tied to High mode | tied to High mode |
| NS power law ΓP | – | 1.02 ± 0.05 | tied to Low mode |
| NS power law NP (10−5) | – | 3.5 ± 0.3 | tied to Low mode |
Notes. The column density was tied up across all data sets, yielding cm−2. The fit provides for 5246 d.o.f., after the addition of a systematic error of 2 percent. Errors are quoted at the 90% confidence level for oneparameter of interest. The effective NS temperatures were corrected for the gravitational redshift: kT∞ =kT(1 + z)−1 where is the gravitational redshift factor, and MNS and RNS are the NS mass and radius. Radii were computed assuming a source distance of 1.37 kpc (Deller et al. 2012).
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