Table 2.
Best-fit parameters of the phase-averaged broadband spectrum of EXO 2030+375 as observed by IXPE, HXMT and ART-XC and obtained from spectro-polarimetric analysis using the model const×tbabs(powerlaw×highecut×polconst+gauss) in the 2–70 keV energy band.
| Parameter | Value |
|---|---|
| NH [1022 cm−2] | 1.94 ± 0.03 |
| Γ | 1.289 ± 0.006 |
| NormΓ(a) | 0.310 ± 0.004 |
| Ecut [keV] | 5.8 ± 0.1 |
| Efold [keV] | 23.5 ± 0.3 |
| EKα [keV] | 6.56 ± 0.02 |
| σKα [keV] | 0.24 ± 0.03 |
| normKα [ph cm−2 s−1] | 0.0025 ± 0.0002 |
| PD [%] | 1.2 ± 0.2 |
| PA [deg] | 39 ± 8 |
| CDU1 (fixed) | 1 |
| CDU2 | 0.963 ± 0.001 |
| CDU3 | 0.928 ± 0.001 |
| CLE | 1.400 ± 0.004 |
| CME | 1.343 ± 0.004 |
| CHE | 1.255 ± 0.002 |
| CART − XC | 1.395 ± 0.004 |
| Flux1 − 70 keV(b) | 4.44 ± 0.01 |
| χ2/d.o.f. | 2448/2592 |
Notes. All reported errors are at the 68% confidence level and based on the MCMC chain values.
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