Table 1.
Spectro-polarimetric best-fit parameters of PKS 2155–304.
| Component | Parameter | Time-averaged | Units |
|---|---|---|---|
| polconst | ΠX | 23.3 ± 1.5 | (%) |
| ΨX | 128±1.8 | (°) | |
| tbabs | nH ( † ) | 1.29 | 1020 cm−2 |
| log-par | α | 2.71±0.02 | |
| αpn | 2.569±0.08 | ||
| Ep ( † ) | 3 | keV | |
| β | 0.078 ± 0.012 | ||
| K | 3.2 ± 0.1 | ||
| const | kDU2 | 0.96 ± 0.01 | |
| kDU3 | 0.89 ± 0.01 | ||
| kpn | 0.96 ± 0.01 | ||
| F2 − 8 keV | 2.63 ± 0.01 | 10−11 erg cm−2 s−1 | |
Notes. The results refer to the joint fit to the IXPE and XMM-Newton data. Fluxes are given in units of 10−11 erg cm−2 s−1, while the logarithmic parabola has a normalization of 10−2. All errors are given at 68% confidence for one parameter of interest (i.e., Δχ2 = 1). The symbol ( † ) indicates those parameters that were kept frozen during the model fitting.
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