Table 2.
Best-fit log-parabola model parameters of joint SXT–LAXPC spectrum using TBabs*logpar model.
| Name | NH | Energy | Constant | α | β | ϵp (keV) | F2 − 10 keV | Stats. (chi sq./d.o.f.) |
|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 1ES 0120+340 | 5.23 | 0.3–15 | ||||||
| A1 | 1.05 |
1.93  |
0.27  |
1.47  |
1.03  |
1.19 (266.74/224) | ||
| A2 | 1.06 |
1.89  |
0.22  |
1.69  |
1.20  |
1.16 (186.84/160) | ||
| RGB J0710+591 | 4.48 | 0.3–10 | ||||||
| A1 | 0.90 |
1.77  |
0.52  |
1.46  |
0.95  |
0.79 (76.59/97) | ||
| 1ES 1101–232 | 5.51 | 0.3–15 | ||||||
| A1 | 1.04 |
2.09  |
0.17  |
0.85  |
2.14  |
1.15 (420.90/366) | ||
| 1ES 1741+196 | 7.32 | 0.3–10 | ||||||
| A1 | 1.08  |
1.75  |
0.41  |
2.07  |
1.54  |
1.18 (281.50/238) | ||
| A2 | 1.17  |
1.73  |
0.45  |
1.98  |
1.45  |
1.09 (240.58/219) | ||
| A3 | 0.91  |
2.01  |
0.16  |
0.98  |
1.10  |
0.87 (157.93/181) | ||
| 1ES 2322–409 | 1.57 | 0.3–6 | ||||||
| A1 | – | 2.34  |
0.37  |
0.33  |
0.32  |
1.17 (161.05/137) | ||
Notes. Column 1: Source name and abbreviation for different spectra. Column 2: Galactic NH value in the units of 1020 cm−2. Column 3: X-ray energy range in keV used for spectral fitting. Column 4: Relative cross-normalisation constant between SXT and LAXPC instruments. This parameter was fixed at 1.0 for SXT and kept free for LAXPC data while performing the joint SXT–LAXPC spectral fit. Column 5: Spectral index is estimated at 1 keV. Column 6: Curvature parameter. Column 7: Synchrotron peak energy in keV estimated using TBabs*eplogpar model. Column 8: 2–10 keV average flux (F) is in units of 10−11 erg cm−2 s−1. Column 9: Reduced chi-square and degrees of freedom values. The errors are estimated within 90% confidence range based on the criterion used in XSPEC.
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